Check my answers
First Question: X - 3 > - 9 I First Used Addition To Add 3 to both sides X > -6 And that's how I got my answer Is It Right ?
yes
correct!
Second Question -2x + 1≤ - 11 Then I Used Subtraction to subtract one from both sides -2x ≤ -12 Then I Divided negative two to both sides x ≤ 6
Am I right?
close..but remember, when you divide/multiply by a negative number, it changes the inequality sign. -2x + 1 <= -11 (subtract 1) -2x <= -12 (divide by -2 and change the inequality sign) x >= 6
when you divide by a negative quantity you flip the sign
oh
so it would be x is greater then or equal to 6
YES
okay here is another 2(x +5) > 8x -8 Then I subtracted 8x from both sides -6x + 10 > -8 Then I added 10 to both sides ' -6x > 2 Then I divided -6 from both sides x > -3 And sense I divided a negative you flip x < -3
-6x +10 >-8 then you need to SUBTRACT
10 FROM BOTH SIDES
oh yeah I did I just accidentally wrote add did I get it right
-6x > -18 x < -18/-6 x< 3 YES
kay
2(x + 5) > 8x - 8 -- distribute 2x + 10 > 8x - 8 -- subtract 8x 2x - 8x + 10 > -8 -- subtract 10 2x - 8x > -8 - 10 -- combine like terms -6x > -18 -- divide by -6 and change the sign x < 3
-2(x -3)≥ 5 – (x + 3) Distributive property -2x + 6 ≥ -5x + 3 add 5x to both sides 3x + 6 ≥ 3 subtract six 3x ≥ -3
the right side is incorrect 5-(x+3) = 5 - x -3 = ...
-2(x - 3) >= 5 - (x + 3) -- distribute -2x + 6 >= 5 - x - 3 can you take it from here
No I understand where I went wrong but i don't know how to work with the right side
if it helps, if you just have a sign before the parenthesis with no number, you can put 1 as the understood number. For example : -2(x - 3) >= 5 - (x + 3) if it helps you can do this.. -2x + 6 >= 5 - 1(x + 3)...then just distribute the -1 through the parenthesis
-1x + 3
what is -1 * 3 ??
oppss lol -3
exactly...-1x - 3....you can continue to leave the -1 beside the x if you want to. It will not change your answer
okay so.. -2x + 6 >= 5 - 1x - 3 then do I add -1 x to both sides
yes, you can
okay then It will look like this -1x + 6 >= 5 - 3
Then I subtract 5 - 3?
-1x + 6 >= 5 - 3 you can subtract 5 - 3 now
but do not forget about your 6
-1x + 6 >= 5 - 3 -- combine like terms -1x + 6 >= 2 -- then subtract your 6 from both sides or you can do it this way -1x + 6 >= 5 - 3 (subtract 6 from both sides -1x >= 5 - 3 - 6 -- now combine like terms you can proceed either way
but do not forget that we want x positive...remember when dividing/multiplying by a negative, the inequality sign changes
-1x >= 14 -1x < = 14
5-3-6 = -4 actually
-x > = -4 x < = 4
oh kay
help.... 10 < –3x + 1 Idk how to do this
subtract 1 from both sides and what do you get ?
oh sorry had to do the laundry 11 < -3x
10 < –3x + 1 10 -1 < -3x 9 < -3x ....
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