Question

Calcular duas expressões simples.

3617f8263a63ab7432c8e97886ca2711.docx

Answer 1

(3/4 - 1/8) x (2/5 + 1/3)
= (6/8 - 1/8) x (6/15 + 5/15)
= 5/8 x 11/15
= (5 x 11)/(8 x 15)
= (5 x 11)/(8 x 3 x 5)
= 11/24

(2 - 3/5) : (1 + 4/3)
= (10/5 - 3/5) : (3/3 + 4/3)
= 7/5 : 7/3
= 7/5 x 3/7
= 3/5