Question

12-2,5*(3x-5)=0.8*(3-10x)

Answer 1

12-2,5*3x+2,5*5=0,8*3-0,8*10x

12-7,5x+12,5=2,4-8x

8x-7,5x=2,4-12-12,5

0,5x=-22,1

x=-22,1:0,5
x=-44,2

Answer 2

12-2,5(3х-5)=0,8(3-10х)
12-7,5х+12,5=2,4-8х
8х-7,5х=2,4-12-12,5
0,5х=-22,1
х=-22,1:0,5
х=-44,2