Question

Решите уравнение
0,4(х-3)=0,5(4+х)-2,5

Answer 1

Ответ:

0.4х-1.2=2+0.5х-2.5

0.4х-0.5х=1.2+2+2.5

-0.1х=4.7

Х=4.7:(-0.1)

Х=47

Answer 2

0.4x-1.2=2+0.5x-2.5

0.4x-1.2=-0.5+0.5x

0.4x-0.5x=-0.5+1.2

-0.1x=0.7

x=0.7÷0.1

x=-7