Question

(2/3 + 1/4)
________ entre 1/5

(2/3 - 1/4)

las primeras fracciones son en un paréntesis grande

Answer 1

2/3+1/4= 8+3/12 = 11/12÷1/5=55/12 2/3-1/4=8-3/12=5/12 55/12×5/12=275/144