Question

Me ajude Principalmente na Letra B!

Answer 1

a)0.3^2÷0.9+3.5
0.9÷0.9+3.5
1+3.5
4.5

b)
$\frac{12}{15} \div \frac{4}{3} - \frac{1}{8} \times \frac{8}{3}$
$\frac{12}{15} \times \frac{3}{4} - \frac{1}{8} \times \frac{8}{3}$
$\frac{36}{60} - \frac{8}{24}$
$\frac{3}{5} - \frac{1}{3}$
$\frac{9 - 5}{15}$
$\frac{4}{15}$