Question

17 + 2.6b = 30

2.6b=30-17=
2.6b=13
b=13/2.6
2.6b/2.6=13/2.6
2.6b/2.6=5
b=5
How do I check this equation to see if it is correct?

Answer 1

You insert 5 back into the equation

Explanation:

17 +2.6b=30

17 +2.6(5)=30

17 +13=30