Mathematics OpenStudy (anonymous): OpenStudy (tkhunny):

Have you considered multiplying by 10 to make your life simpler? OpenStudy (tkhunny):

Multiply EVERYTHING by 10. Please feel free to respond on the public boards. OpenStudy (anonymous):

40/50b-20=-90/100b-30 Like that? OpenStudy (tkhunny):

?? No, correctly. Practice: 8*(1/2) = ?? OpenStudy (anonymous):

4 OpenStudy (tkhunny):

Why did you not get 1/2? That's what you did to the equations! 8(1/2) = $$\dfrac{8}{1}\cdot\dfrac{1}{2} = \dfrac{8*1}{1*2} = \dfrac{8}{2} = 4$$ Go try that "multiply by 10" again. This time, don't you dare let 10 get into anyone's denominator. OpenStudy (anonymous):

$\frac{ 4 }{ 5 }b-2=-\frac{ 9 }{ 10 }b+3$ OpenStudy (anonymous):

Do i multiply the two like terms? OpenStudy (tkhunny):

Why are you not just multiplying by 10? $$10\cdot\dfrac{4}{5} = 8$$ You do the rest. OpenStudy (anonymous):

8b-2=-9b+3 OpenStudy (anonymous):

b=1 RIGHT? OpenStudy (anonymous):

hellooooo OpenStudy (anonymous):

Is anyone here OpenStudy (tkhunny):

Try again. Remember your Distributive Property. $$10\cdot\left(\dfrac{4}{5}b - 2\right) = 10\cdot\dfrac{4}{5}b - 10\cdot2$$ We ARE getting closer. OpenStudy (anonymous):

8b-20 OpenStudy (tkhunny):

Super. Now the other side. OpenStudy (anonymous):

-9b+30 OpenStudy (tkhunny):

8b - 20 = -9b + 30 It is hoped that this is an easier problem to solve than the one with which we started. No? OpenStudy (anonymous):

yes OpenStudy (anonymous):

now what do i do. do i subtract -9 on both sides OpenStudy (tkhunny):

This method, the removal of fractions, CAN be very useful. You should NOT begin to believe that you should do it all the time. Just keep it in your head as something you MIGHT do if it appears to be to your advantage. OpenStudy (anonymous): OpenStudy (anonymous):

Question:how do you know that you were suppost to multiply by 10 OpenStudy (tkhunny):

There is no -9 to subtract. The term is -9b. Not quite. Try adding 9b to both sides, again and adding 20 to both sides again. OpenStudy (anonymous):

i get 17 and 50 OpenStudy (anonymous):

17b-50 OpenStudy (tkhunny):

8b - 20 = -9b + 30 Add 8b to both sides 8b - 20 + 9b = -9b + 30 + 9b 8b + 9b - 20 = -9b + 9b + 30 17b - 20 = 0b + 30 17b - 20 = 30 Add 20 to both sides 17b - 20 + 20 = 30 + 20 17b - 0 = 50 17b = 50 Divide by 17 17b/17 = 50/17 (17/17)b = 50/17 1b = 50/17 b = 50/17 For some odd reason, you gathered everything to one side and then discarded the equal sign. Don't do that. If you find your equal sign missing, something went horribly wrong. How do you add these? $$\dfrac{1}{5} + \dfrac{1}{2} + \dfrac{1}{10}$$?

Latest Questions dunlapace: what is the most slippery liquid to slip off a ankle monitor with?
1 hour ago 1 Reply 0 Medals ATLAYZ: When two light beams of wavelengths 1and fall on a metal surface, they produce photoelectrons with energies 115 eV and 254 eV respectively.
2 hours ago 0 Replies 0 Medals ATLAYZ: When two light beams of wavelengths 1and fall on a metal surface, they produce photoelectrons with energies 115 eV and 254 eV respectively.
2 hours ago 0 Replies 0 Medals karremat: What do you already know about your topic? u25cf What questions do you have about your topic? u25cf Brainstorm some problems or issues that arise from your
3 hours ago 9 Replies 2 Medals liliellisd05: Leela invests \$500 at 4.5% interest according to the equation mc018-1.jpg, where Vl is the value of the account after t years.
9 hours ago 0 Replies 0 Medals xjezzer: Create a Java application that prompts the user for a word and then outputs the word in uppercase and the length of the word to the user.
8 hours ago 11 Replies 4 Medals karremat: does anyone know any issues that can have effects or impacts in plants, Animal sy
8 hours ago 7 Replies 2 Medals karremat: do anybody know any issues that can have effects or impacts in plants, Animal sys
13 hours ago 1 Reply 0 Medals karremat: Does anyone know anything about pesticide like in point forms
15 hours ago 0 Replies 0 Medals blah1234: In each diagram, u2206ABC has been transformed to yield u2206A'B'C'. Which transf
17 hours ago 1 Reply 0 Medals