Question

me ajudem nesses cálculos pfvrrr.

4-3x-7+x=6x

3x-4x-7x=27

49-7x -14+7=0

-y-12=-4y+24

-m=+150-11m

Answer 1

4-3x-7+x=6x
-3x+x-6x=-4+7
-2x-6x= 3
-8x=3
x=3/8
x= 2,6

3x-4x-7x=27
3x-11x=27
-9x=27
x=27/9
x= 3

49-7x-14+7=0
-7x=-49+14-7
-7x=-42
x=-42/7
x= -6

-y-12=-4y+24
-y+4y=24+12
3y=36
y=36/3
x= 12

-m=150-11m
-m+11m=150
10m=150
m=150/10
m= 15