Question

Calcule o valor de X

Answer 1

Resposta:

a) ×=160

b) x=15

Explicação passo-a-passo:

a) 120+140+x=180

120+140-180+x=0

30+x=0

x=160

b) 120+3x +x=180

120+4x=180

4x=180-120

x=60/4

x= 15