Question

resolva a equações:
2(x+10)=3x
4(x+3)=2(x+8)
3(x+4)+20=x+3x-5

Answer 1

➡x = 20

➡x = 2

➡x = 37

Explicação passo-a-passo:

2(x+10)=3x

2x+20=3x

2x-3x=-20

-x= -20 .(-1)

x = 20

4(x+3)=2(x+8)

4x+12=2x+16

4x-2x=16-12

2x=4

x=4/2

x = 2

3(x+4)+20=x+3x-5

3x+12+20=x+3x-5

3x-x-3x=-5-12-20

3x-4x=-37

-x = -37 .(-1)

x = 37

Espero ter ajudado!!☺