Question

b) (30 – 18) + ( 15 - 7) + (3.4-5)​

Answer 1

Resposta:

27

Explicação passo-a-passo:

$\left(30-18\right)+\left(15-7\right)+\left(3\cdot \:4-5\right)$

$=12+\left(15-7\right)+\left(3\cdot \:4-5\right)\\=12+8+\left(3\cdot \:4-5\right)\\=12+8+7\\=27$