Question

Помогите решить

1) 1,3(t-0,6)=1,8t

2)5/7(дробь)(x+3)=-2(1-x)

3)6(4x-7-3(5-8x)=0

Answer 1

1)1.3t-0.78-1.8t=0
-0.5t=0.78
t=-1.56
2)5/7x+15/7=-2+2x
5/7x-2x=-2-15/7
-9/7x=-29/7
x=29/9(дробь)