Question

0,8(х-7)=0,3(2х+9)-4,5

Answer 1

0.8(x-7)=0.3(2x+9)-4.5
0.8x-5.6=0.6x+2.7-4.5
0.8x-0.6x=2.7-4.5+5.6
0.2x=3.8
x=19

Answer 2

0,8(х-7)=0,3(2х+9)-4,5
0,8х-5,6=0,6х+2,7-4,5
0,8х-0,6х=2,7-4,5+5,6
0,2х=3,8
х=19
Ответ: 19