Question

Me ajuda nesse calculo: Dados A = 1 - 1/4 e B= 1 + 1/20, a calcular o valor de 7A/B

Answer 1

$A=1-\frac{1}{4}=\frac{3}{4}\\ \\ B=1+\frac{1}{20}=\frac{21}{20}\\ \\ \boxed{7*\frac{A}{B}=7*\frac{\frac{3}{4}}{\frac{21}{20}}=7*\frac{3}{4}*\frac{20}{21}=5}$

Answer 2

- A = 1 - 1/4 = (4.1-1)/4 = 3/4
- B= 1 + 1/20 = (20.1 + 1)/20 = 21/20
- 7A/B = 7. 3/4 . 20/21 = 5