Solve for x: −2(x + 3) = −2(x + 1) − 4
a. 2
b. 3
c. no solution
d. all real numbers
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OpenStudy (anonymous):
plz explain
OpenStudy (mertsj):
1. Remove the parentheses first using the distributive property.
OpenStudy (anonymous):
ok -2x - 6 = -2x - 2 -4
OpenStudy (mertsj):
Good job. Now collect the like terms on the right.
OpenStudy (anonymous):
ok is it -2x - 2 in the right side
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OpenStudy (mertsj):
What is -2-4?
OpenStudy (anonymous):
oh, yeah -6
OpenStudy (mertsj):
So what is your equation now?
OpenStudy (anonymous):
-2x - 6 = -2x - 6
OpenStudy (mertsj):
Oh my land!!! Look at that!! A number is equal to itself. I think that is true for all numbers, don't you?
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OpenStudy (anonymous):
oh, thx missed that thx alot
OpenStudy (mertsj):
yw
OpenStudy (anonymous):
wait @Mertsj do you know what no solution means? can you give me an example
OpenStudy (anonymous):
4.1x - 6.2 = 2
OpenStudy (mertsj):
If you had an equation such as this? 2x+3=2x-8
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OpenStudy (anonymous):
So... Your answer?
OpenStudy (mertsj):
Then you would subtract 2x from both sides and you would get 3=-8 which can never be true. So there is no value of x that will make that sentence true and hence there is no solution.
OpenStudy (anonymous):
thxs alot, i have troble sometimes firguring out my 5th math
OpenStudy (mertsj):
Keep working sweetheart. You'll get it.
OpenStudy (anonymous):
yup thxs
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