0,6х-4,8х+7=-8 7*(5х-6)+8=8х-74 7,8х+5х-три пятых*(11х-13)=20,2 - вопрос №064878756887478511132022756425 от rrrrrrrrrrrrrrrrt 07.11.2020 22:37

Question

Математика: 0,6х-4,8х+7=-8 7*(5х-6)+8=8х-74 7,8х+5х-три пятых*(11х-13)=20,2

rrrrrrrrrrrrrrrrt · Answer

0,6х-4,8х=-15-4,2х=-15х=15/ (21/5)x=75/21x=3  12/2135x-42+8-8x+74=027x+40=027x=-40x=-(40/27)x=-1  13/2712,8x- 0,6*(11x-13)=20,212,8x- 6,6x + 7,8 - 20,2 =06,2x=12,4x=2...