Question

0,5(4+x)-0,4(x-3)=2,5

Answer 1

2+0.5x - 0.4x + 1.2=2.5
3.2+0.1x=2.5
0.1x=2.5-3.2
0.1x=-0.7
x=-7

Answer 2

0,5(4+х)-0,4(х-3)=2,5
2+0,5х-0,4х+1,2=2,5
х(0,5-0,4)=2,5-2-1,2
х=-0,7/0,1
х=-7