SOLUTION: -3(t-2)=12 -3+3(t-2)=12+3 (t-2)=15 t-2/-2=15/-2 t=-7.5

Algebra ->  Equations -> SOLUTION: -3(t-2)=12 -3+3(t-2)=12+3 (t-2)=15 t-2/-2=15/-2 t=-7.5      Log On


   



Question 1137257: -3(t-2)=12
-3+3(t-2)=12+3
(t-2)=15
t-2/-2=15/-2
t=-7.5

Found 2 solutions by ikleyn, MathTherapy:
Answer by ikleyn(52910) About Me  (Show Source):
You can put this solution on YOUR website!
.

            As I understand this post,  the visitor asks to check if his  (or her)  solution is correct.


-3*(t-2) = 12


-3t + (-3)*(-2) = 12


-3t + 6 = 12


-3t + 6 - 6 = 12 - 6


-3t = 6


Divide both sides by (-3)


t = 6%2F%28-3%29


t = -2.


ANSWER.  t= -2.


CHECK.  Substitute t= -2 into the given equation. You will get in the left side 

        -3*((-2) -2) = -3*(-4) = 12.   ! Correct !


Solved and checked.

The solution in your post is INCORRECT.

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Answer by MathTherapy(10557) About Me  (Show Source):
You can put this solution on YOUR website!

-3(t-2)=12
-3+3(t-2)=12+3
(t-2)=15
t-2/-2=15/-2
t=-7.5
 -3(t-2)=12
-3+3(t-2)=12+3 <===== NOPE, NOPE, NOPE!! This is NOT how this is done
matrix%281%2C3%2C+t+-+2%2C+%22=%22%2C+12%2F%28-+3%29%29 <======== DIVIDE both sides by - 3
t - 2 = - 4
highlight_green%28matrix%281%2C5%2C+t%2C+%22=%22%2C+-+4+%2B+2%2C+%22=%22%2C+-+2%29%29