SOLUTION: 2x-3(x+4)=-5

Question 628824: 2x-3(x+4)=-5
Found 2 solutions by Tatiana_Stebko, lenny460:
Answer by Tatiana_Stebko(1539) (Show Source): You can put this solution on YOUR website!

Answer by lenny460(1073) (Show Source): You can put this solution on YOUR website!
2x - 3(x + 4) = -5
-3 * x = -3x
-3 * 4 = -12
2x - 3x - 12 = -5
Combine like terms:
2x - 3x = -1x

Therefore:
-1x - 12 = -5
Add 12 to each side of the equation
-1x - 12 + 12 = -5 + 12
Combine like terms:
-12 + 12 = 0
-5 + 12 = 7
-1x = 7
Divide each side by -1
-1x/-1 = 7/-1
x = -7

Check:
2x - 3(x + 4) = -5
2(-7) - 3(-7 + 4) = -5
-3 * -7 = 21
-3 * 4 = -12
2(-7) = 2 * -7 = -14
Therefore:
-14 + 21 - 12 = -5
Combine like terms:
-14 - 12 = -26
-26 + 21 = -5
-26 + 21 = -5
Therefore:
-5 = -5

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