Question

1.sabendo que u=q resolva as equações
A)2(x+3)=30

B)8-2(x+5)=5

C)3(y-1)-4(y-2)=6

D)2(5y+1)=27

E)2y-3(y-1=8-2(y-2)

F)6x-5(1-x)=10x+6

G)3(2x+4)=4(x+6

Answer 1

A) 2x + 6 = 30
2x = 30 - 6
2x = 24
x = 24/2
x = 12
B) 8 - 2x - 10 = 5
- 2x = 5 + 10 - 8
- 2x = 7. ( - 1 )
2x = - 7
x = - 7/2
C) 3y - 3 - 4y + 8 = 6
3y - 4y = 6 - 8 + 3
-y = 1 ( - 1 )
y = - 1
D) 10y + 2 = 27
10y = 27 - 2
10y = 25
y= 25/10 simplificando por 5 = 5/2
E) 2y - 3y + 3= 8 - 2y + 4
2y -3y + 2y = 8 + 4 - 3
-y = 9 ( - 1 )
y = - 9
F) 6x - 5 + 5x = 10x + 6
6x + 5x - 10x = 6 -5
x= 1
G) 6x + 12 = 4x + 24
6x - 4x = 24 - 12
2x = 12
x = 12/2
x= 6