Question

Solve for b , then find the value of b when a= 3
4a=2b-7

Answer 1

4×3=2b-7
12=2b-7
+7 +7
19=2b
19÷2=9.5
2b÷2=b
9.5=b

Answer 2

4(3)=2b-7
12=2b-7
+7 +7
19=2b
19 divided by 2 = 9.5
2b divided by 2 = b
b=9.5