Question

нужно упростить
5/6(2,4x+6/35y)-1,2(2/3y-5/7y)

Answer 1

= (2,4 * 5 : 6)х + (5/6 * 6/35)у - (1,2 * 2 : 3)х + (1,2 * 5)/7у =
= 2х + 1/7у - 0,8х + 6/7у = (2х - 0,8х) + (1/7у + 6/7у) = 1,2х + 7/7у =
= 1,2х + у