Question

2x+4=18
4x-6=0
2x+9=x+12
27-13=12-x
2x+3-14=3+5x+7-3x-21​

Answer 1

Explicação:

2x+4=18

2x = 18-4

2x= 14

x= 14/2

x= 7

4x-6=0

4x= 0+6

4×= 6

x= 6/4

×= 3/2

2x+9=x+12

2x-x= -9+12

x= 3

27-13=12-x

14= 12-x

x= 12-14

x= -2

2x+3-14=3+5x+7-3x-21

2x-5x+3x= -3+14+3+7-21

0=0