Question

a + 1 = 2b + 3
2b + 3 = 8

??????
ME AJUDEM!!!!

Answer 1

A + 1 = 2b + 3
2b + 3 = 8


2b + 3 = 8
2b = 8 - 3
2b = 5
b = 5/2   ( SUBSTITUIR o (b))


A + 1 = 2b + 3
A + 1 = 2(5/2) + 3
A + 1 = 2(5)/2+ 3
A + 1 = 10/2 + 3
A + 1 = 5 + 3
A + 1 = 8
A = 8 - 1
A = 7


assim
A = 7
b = 5/2