А) 2/3(1.5х + 0.6) - 0.8(5/12х - 0.5)=1 б) 11 - - вопрос №231506085120511132154038257 от daryamelikhova 22.02.2021 06:39

Question

Математика: А) 2/3(1.5х + 0.6) - 0.8(5/12х - 0.5)=1 б) 11 - 3 |2х + 1| = 5

daryamelikhova · Answer

2/3(1.5х + 0.6) - 0.8(5/12х - 0.5)=12/3*1.5х + 0.4 - 0.8*5/12х + 0.4=1х + 0.4 - 0.8*5/12х + 0.4=1х + 0.4 - 8/10*5/12х + 0.4=1х - 2/6х =1-0.84/6х =0.2х=1/5*2/3х=2/1511 - 3 |2х + 1| = 5- 6х -3 = -66х = 9х=9/6х=1.5...