Is 7 a solution of 5x-3=12?

asked Jun 20, 2016 64.2k views

4 votes

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1 vote

No

5x-3=12
Add 3 to each side of whole numbers

5x=15

Divide each side by 5
x=3

Petrichor answered Jun 20, 2016

7.8k points

4 votes

If 7=x? No.
5(7)-3=12
35-3=12
32=12
32 ≠12.....so no, it isn't.

Ewall answered Jun 24, 2016

by Ewall

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