Question

3)-17.4-3x=8.2
4)-(x+2)-(3x-12)=6
5)2(x+10)-5(x+2)=-(6+5x)

Answer 1

3)-17.4-3x=8.2
3x=-17,4-8,2
3x=-25,6
x=-25,6:3
x=-25 3/5:3=-128/5*1/3=-128/15
x=-8 8/15

4)-(x+2)-(3x-12)=6
-x-2-3x+12=6
4x=10-6
4x=4
x=1

5)2(x+10)-5(x+2)=-(6+5x)
2x+20-5x-10=-6-5x
-3x+5x=-6-10
2x=-16
x=-8