Question

Determine x:
A=)6x=2x+12
B=)22x-5=x+1
C=)12x+3=x+4
D=)15x+7=4x+10
E=)14x-10=2x+2
F=)14x-7=8x-2
G=)122x+1=4x-7
H=)19x+9+3x=15
I=)12x-1=12x+3
J=)43x-2=4x+9
K=)25x-3+x=2x+9
L=)7x-7x=x+18
M=)x+x-4=17-22x+1
N=)x+2x+3-5x=4x-9
O=)x+6x-16=3x+2x-4
P=)4x+4=3x-2x+4

Answer 1

A)6x=2x+12
6x -2x = 12
4x= 12
x= 12/4
x= 3

B)22x-5=x+1
22x -x = 1+5
21x= 6
x= 6/21

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

D)15x+7=4x+10
15x -4x = 10 -7
11x= 3
x= 3/11

E)14x-10=2x+2
14x -2x = 2 +10
12x= 12
x= 12/12
x=1

F)14x-7=8x-2
14x -8x = -2 +7
6x = 5
x= 5/6

G)122x+1=4x-7
122x -4x = -7 -1
118x = -8
x= -8/118 (simplificando por 2)
x= -4/59

H)19x+9+3x=15
19x +3x = 15 -9 
22x = 6 
x= 6/22 (simplificando por 2)
x= 3/11

I)12x-1=12x+3
12x -12x = 3 +1
0x= 4
x= 4/0

J)43x-2=4x+9
43x -4x= 9 +2
39x = 11
x= 11/39

K)25x-3+x=2x+9
25x +x -2x = 9 +3
26x -2x = 12
24x= 12
x= 12/24 (simplificando por 4)
x= 3/6 (simplificando por 3)
x= 1/2

L)7x-7x=x+18
-x = 18 . (-1)
x= -18

M)x+x-4=17-22x+1
2x -22x = 17 +1 +4
-20x = 18 +4
-20x= 22 . (-1)
20x= -22
x= -22/20 (simplificando por 2)
x= -11/10

N)x+2x+3-5x=4x-9
x+2x -5x -4x= -9 -3
3x -9x = -12
-6x = -12 . (-1)
6x= 12
x= 12/6
x=2

O)x+6x-16=3x+2x-4
x+6x -3x -2x= -4 +16
7x -5x = 12
2x= 12
x= 12/2
x= 6

P)4x+4=3x-2x+4
4x -3x +2x = 4 -4
x +2x= 0
3x= 0
x= 0/3
x= 0

Bons estudos!