Question

a) 2.x - 4= 16
b)2.x+3+5.x=17​

Answer 1

Resposta:

a) $x=10$

b) $x=2$

Explicação passo-a-passo:

a)

$2x-4=16\\2x=16+4\\2x=20\\x=\frac{20}{2} =10$

b)

$2x+3+5x=17\\7x+3=17\\7x=17-3\\7x=14\\x=\frac{14}{7} \\x=2$