Question

Determine as equações 4 (2b+10) - 40 =40

Answer 1

4 (2b+10) - 40 =40
8b+40-40=40
8b=40
b=40/8
b=5

Answer 2

4(2b+10) - 40 =40
8b + 40 - 40 = 40
8b = 40
b = 40/8
b = 5

S ={5}