Question

Resolva
A) x+4=10
B) x+101=300
C) x-279=237
D) x-8=-10
E) x+9=-1
F) 3x=12
G) 9x=18
H) 35x=-105
I) 7x-1=13
J) 6x-10=2x+14
K) 6x=2x+14
L) 2x+6=x+18
M) 5x-3=2x+9
N) 3(x+2)=15
O) 2(x-1)-7=16

Answer 1

A) x + 4 = 10

x = 10 - 4
x = 6
.
.
.
B) x + 101 = 300

x = 300 - 101
x = 199
.
.
.
C) x - 279 = 237

x = 237 + 279
x = 516
.
.
.
D) x - 8 = -10

x = -10 + 8
x = -2
.
.
.
E) x + 9 = -1

x = -1 - 9
x = -10
.
.
.
F) 3x = 12

x = 12/3
x = 4
.
.
.
G) 9x = 18

x = 18/9
x = 2
.
.
.
H) 35x = -105

x = -105/35
x = -3
.
.
.
i) 7x - 1 = 13

7x = 13 + 1
7x = 14
x = 14/7
x = 2
.
.
.
J) 6x - 10 = 2x + 14

6x - 2x = 14 + 10
4x = 24
x = 24/4
x = 6
.
.
.
K) 6x = 2x + 14

6x - 2x = 14
4x = 14
x = 14/4
x = 7/2
.
.
.
L) 2x + 6 = x + 18

2x - x = 18 - 6
x = 12
.
.
.
M) 5x - 3 = 2x + 9

5x - 2x = 9 + 3
3x = 12
x = 12/3
x = 4
.
.
.
N) 3 (x + 2) = 15

3x + 6 = 15
3x = 15 - 6
3x = 9
x = 9/3
x = 3
.
.
.
O) 2 (x - 1) - 7 = 16

2x - 2 - 7 = 16
2x = 16 + 9
2x = 25
x = 25/2






☆Espero ter ajudado! tmj