Question

помогите решить пример 4(0.7х-0.3)-5(0.2х-0.6)=-3.8-х

Answer 1

4*0.7x-0.3*4-5*0.2x+5*0.6=-3.8-x
2.8x-1.2-x+3=-3.8-x
2.8x-x+x=-3.8+1.2-3
2.8x=-5.6
x=-5.6/2.8
x=-2

Answer 2

2.8х-1.2-2х+3＝-3.8-х
2.8х-2х＋х＝1.2-3-3.8-50
1.8х＝-5.6
Х＝-5.6÷1.8
Х＝-3