Question

a) 3(X+2)=12
b) (12X-8):2=12
c) (2X-5).4=20​

Answer 1

Explicación paso a paso:

a)

3(X+2)=12

3x + 6=12

3x = 12-6

3x = 6

x = 6/3

x = 2

b)

(12X-8):2=12

$\frac{(12x - 8)}{2} = 12$

$12x - 8 = 12 \times 2$

$12x -8 = 24$

$12x = 24 + 8$

$12x = 32$

$x = \frac{32}{12} \\ x = \frac{8}{3}$

c) (2X-5).4=20

8x - 20 = 20

8x = 20+20

8x = 40

x = 40/8

x = 5