Question

Calcule as equações

A)2x+15=x-5
B)2x+15=x-5
C)3x+4=-x-12
D)5x-30=2x+15

Answer 1

A)2x+15=x-5
2x-x=-5-15
x= -20

B)2x+15=x-5
2x-x=-5-15
x = -20

C)3x+4=-x-12
3x+x=-12-4
4x=-16
x=-4

D)5x-30=2x+15
5x-2x=15+30
3x=45
x=15

Espero que tenha ajudado, bons estudos :) 

Answer 2

A)
2x+15=x-5
2x-x=-5-15
x=-20

B)
2x+15=x-5
2x-x=-5-15
x=-20

C)
3x+4=-x-12
3x+x= -12-4
4x= -16
x= -16/4
x=-4

D)
5x-30=2x+15
5x-2x= 15+30
3x=45
x=45/3
x=15


bons estudos!