Question

qual é a resposta 2x+4=28

3x-7=2x+1

4x-1=x+11

6(x-3)=7(x+1)-16

4y-y-2=34

Answer 1

Olá,

Vamos lá,

2x+4=28
2x = 28 - 4
2x= 24
x = 24/2
x = 12

3x-7=2x+1
3x - 2x = 1 +7
x = 8


4x-1=x+11
4x -x=11+1
3x = 12
x = 12/3
x=4


6(x-3)=7(x+1)-16
6x -18=7x+7-16
6x-7x=7-16+18
-x= 9
x= -9

4y-y-2=34 4y-y=34+2
3y=36
y=36/3
y=12