SOLUTION: help me solve this please 7a-(a-5)=-10

Question 678153: help me solve this please 7a-(a-5)=-10
Answer by ankor@dixie-net.com(22740) (Show Source): You can put this solution on YOUR website!
7a-(a-5)=-10
Remove the brackets, the minus change the -5 to +5
7a - a + 5 = -10
subtract 5 from both sides
6a = -10 - 5
6a = -15
a =
a = or -2.5
:
:
You can check solution in the original problem
7(-2.5) - (-2.5-5) = -10
-17.5 -(-7.5) = -10
minus a minus is a plus
-17.5 + 7.5 = -10
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