Question

0.4(x-3)=0.5(4+x)-2.5

Answer 1

0,4x-1,2=2+0,5x-2,5
0,4x-0,5x=2-2,5+1,2
0,1x=1,7
x=1,7:(-0,1)
x=-17

Answer 2

0.4(x-3)=0.5(4+x)-2.5

0.4х-1.2=2+0.5х-2.5

0.4х-0.5х=1.2+2-2.5

-0.1х=0.7

х=-7