1)-x+7=6x 2)9+4x=8x-9 3)3-4x=-8x+9 4)5(x-3)=4x 5)-x=4(6+x)

Question

1)-x+7=6x
2)9+4x=8x-9
3)3-4x=-8x+9
4)5(x-3)=4x
5)-x=4(6+x)

Answer 1

-x+7=6
x-7x=-7
х=-7/-7
х=1


9+4x=8x-9
-4x=-18
х=-18/-4
х=4,5



3-4x=-8x+9
-4x+8x=9-3
4x=6
х=6/4
х=1,5




5(x-3)=4x
5x-15=4x
5x-4x=15
x=15





-x=4(6+x)
-x=24+4x
-x-4x=24
-5x=24
x=24/5
х=4,8