SOLUTION: My daughter trying this math problem 5(3-7a)=-230 here's her work -15-35a=-230 -35a=-215/-35 No answer cause she said it would b a decimal pls help so I can show her how to so

Question 841129: My daughter trying this math problem 5(3-7a)=-230 here's her work
-15-35a=-230
-35a=-215/-35
No answer cause she said it would b a decimal pls help so I can show her how to so her other problems tks
Answer by ewatrrr(24785) (Show Source): You can put this solution on YOUR website!

 

Hi,

The Idea is to Isolate 'a' on one side of the Equation

5(3-7a)=-230   |Distributing the 5

15-35a = -230   |Add 35a to both sides

 15 = -230 + 35a   |add 230 to both sides

 245 = 35a    |Divide both sides by 35

   7 = a  

 

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