Question

ACTIVIDAD
Encuentra la solución de las siguientes ecuaciones
a) 5x = 30
b) x - 6 = 10
c) 2x + 8 = 12
d) 4x - 1 = 3
e) 3x + 7 = 16
f) 3x + 5 = 8
g) 2x + 7 = 15
h) 10x - 4 = 26
i) 2x – 5 = x + 9
j) 13x + 1 = 2x + 12
k) 25x + 4 – 5x = 10x + 104
l) 4x + 8 = 2x + 15 – x + 2

Answer 1

A)

$5x = 30 \\ x = \frac{30}{5} \\ x = 6$

B)

$x - 6 = 10 \\ x = 10 + 6 \\ x = 16$

C)

$2x + 8 = 12 \\ 2x = 12 - 8 \\ x = \frac{4}{2} \\ x = 2$

D)

$4x - 1 = 3 \\ 4x = 3 + 1 \\ x = \frac{4}{4} \\ x = 1$

E)

$3x + 7 = 16 \\ 3x = 16 - 7 \\ x = \frac{9}{3} \\ x = 3$

F)

$3x + 5 = 8 \\ 3x = 8 - 5 \\ x = \frac{3}{3} \\ x = 1$

G)

$2x + 7 = 15 \\ 2x = 15 - 7 \\ x = \frac{8}{2} \\ x = 4$

H)

$10x - 4 = 26 \\ 10x = 26 + 4 \\ x = \frac{30}{10} \\ x = 3$

I)

$2x - 5 = x + 9 \\ 2x - x = 9 + 5 \\ x = 14$

J)

$13x + 1 = 2x + 12 \\ 13x - 2x = 12 - 1 \\ 11x = 11 \\ x = \frac{11}{11} \\ x = 1$

K)

$25x + 4 - 5x = 10x + 104 \\ 25x - 5x - 10x = 104 - 4 \\ 10x = 100 \\ x = \frac{100}{10} \\ x = 10$

L)

$4x + 8 = 2x + 15 - x + 2 \\ 4x - 2x + x = 15 + 2 - 8 \\ 3x = 9 \\ x = \frac{9}{3} \\ x = 3$

Saludos :D