Question

A=4x+10=45-3x e B=5x-3x=30 então A+B é:

Answer 1

Explicação passo-a-passo:

4x +10 = 45 -3x

4x +3x = 45 - 10

7x = 35

x= 35/7

x= 5

5x -3x = 30

2x = 30

x= 30/2

x= 15

A + B= 5 +15 = 20