a) 16x – 1 = 12x + 3
b) 3x – 2 = 4x + 9
c) 5x -3 + x = 2x + 9
d) 17x – 7x = x + 18
e) x + x – 4 = 17 – 2x + 1
f) x + 2x + 3 – 5x = 4x – 9
g) 5x + 6x – 16 = 3x + 2x - 4
h) 5x + 4 = 3x – 2x + 4
Respostas
Resposta:
Explicação passo-a-passo:
a) 16x – 1 = 12x + 3
16x - 12x = 3 + 1
4x = 4
x = 1
b) 3x – 2 = 4x + 9
3x - 4x = 9 + 2
- x = 11
x = - 11
c) 5x -3 + x = 2x + 9
5x + x - 2x = 9 + 3
4x = 12
x = 3
d) 17x – 7x = x + 18
17x - 7x - x = 18
9x = 18
x = 2
e) x + x – 4 = 17 – 2x + 1
x + x + 2x = 17 + 1 + 4
4x = 22
x = 5,5
f) x + 2x + 3 – 5x = 4x – 9
x + 2x - 5x - 4x = - 9 - 3
- 6x = - 12
x = 2
g) 5x + 6x – 16 = 3x + 2x - 4
5x + 6x - 3x - 2x = - 4 + 16
6x = 12
x = 2
h) 5x + 4 = 3x – 2x + 4
5x - 3x + 2x = 4 - 4
0x = 0
Resposta:
a) 16x - 1 = 12x + 3
16x - 12x = 3 - 1
4x = 2
x = 2/4
x = 0,5
______
b) 3x - 2 = 4x + 9
3x - 4x = 9 + 2
-x = 11
-x/-1 = 11/-1
x = -11
______
c) 5x -3 + x = 2x + 9
5x + x - 2x = 9 - 3
6x - 2x = 6
4x = 6
x = 6/4
x = 1,5
______
d) 17x – 7x = x + 18
17x - 7x - x = 18
9x = 18
x = 18/9
x = 2
______
e) x + x – 4 = 17 – 2x + 1
x + x + 2x = 17 + 1 + 4
4x = 22
x = 22/4
x = 5,5
______
f) x + 2x + 3 – 5x = 4x – 9
x + 2x - 5x - 4x = -9 - 3
3x - 9x = -12
-6x = -12
x = -12/-6
x = 2
______
g) 5x + 6x – 16 = 3x + 2x - 4
5x + 6x - 3x - 2x = -4 + 16
11x - 5x = 12
6x = 12
x = 12/6
x = 2
______
h) 5x + 4 = 3x – 2x + 4
5x + 2x - 3x = 4 - 4
7x - 3x = 0
4x = 0
x = 0/4
x = 0