Respuesta:
a) 5x + 2 = 6 - x
5x + x = 6 - 2
6x = 4
x = 4/6
x = 2/3
b) 3(x - 4) = 12 - 5x
3x - 12 = 12 - 5x
3x + 5x = 12 + 12
8x = 24
x = 24/8
x = 3
c) 14 - 5x /10 = 6
14 - 5x = 6 × 10
14 - 5x = 60
- 5x = 60 - 14
- 5x = 46
x = 46/-5
[tex]d) \frac{x}{4} =\frac{-5+3x}{10}[/tex]
10x = -20 + 12x
20 = 12x - 10x
20 = 2x
10 = x
[tex]e) \frac{x+2}{4}=\frac{9-x}{3}[/tex]
3x + 6 = 36 - 4x
3x + 4x = 36 - 6
7x = 30
x = 30/7
[tex]f) \frac{19x-20}{5x +3} =2[/tex]
19x - 20 = 10x + 6
19x - 10x = 6 + 20
9x = 26
x = 26/9
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Respuesta:
a) 5x + 2 = 6 - x
5x + x = 6 - 2
6x = 4
x = 4/6
x = 2/3
b) 3(x - 4) = 12 - 5x
3x - 12 = 12 - 5x
3x + 5x = 12 + 12
8x = 24
x = 24/8
x = 3
c) 14 - 5x /10 = 6
14 - 5x = 6 × 10
14 - 5x = 60
- 5x = 60 - 14
- 5x = 46
x = 46/-5
[tex]d) \frac{x}{4} =\frac{-5+3x}{10}[/tex]
10x = -20 + 12x
20 = 12x - 10x
20 = 2x
10 = x
[tex]e) \frac{x+2}{4}=\frac{9-x}{3}[/tex]
3x + 6 = 36 - 4x
3x + 4x = 36 - 6
7x = 30
x = 30/7
[tex]f) \frac{19x-20}{5x +3} =2[/tex]
19x - 20 = 10x + 6
19x - 10x = 6 + 20
9x = 26
x = 26/9