Question

ajudaaaaaaaaaaaa!!!!!!!!!!!!​

Answer 1

Resposta:

a)5/3

b)16,43

Explicação passo-a-passo:

$a)( - \frac{3}{4} ).( - \frac{20}{9} ) = \frac{60}{36} \div 12 = \frac{5}{3} \\ \\ b)7.83 + 8.6 = 16.43$