Question

Ecuaciones: PORFAS AYUDA!!!
-6x=3(x-21)

-10x= -6(4+3x)

31x+ -(135+4x)

3(x+12)=2(x-1)

10(x-8)=15(2x-2)

-(4x-17)=6(x-3)

3(16x+4)=3(34+x)

11(3-x)=10(3-2x)

Answer 1

6x=3x63
6x+3x=63
9x=63
x=63:9
x=7