Question

De las siguientes ecuaciones, despeja x

7x= -28 4x - 2 = 28

-6x = 150 5 - 8x = 45

Answer 1

Respuesta:

1.) 7x = -28

$\sf 7x=-28 \\\sf \frac{7x}{7} = \frac{-28}{7} \\ \boxed{\sf x=-4}$

2.) 4x - 2 = 28

$\sf 4x-2=28 \\\sf 4x=28+2 \\\sf 4x=30 \\\sf \frac{4x}{4} = \frac{30}{4} \\ \boxed{\sf x=7.5}$

3.) -6x = 150

$\sf -6x=150 \\\sf \frac{-6x}{-6} = \frac{150}{-6} \\ \boxed{\sf x=-25}$

4.) 5 - 8x = 45

$\sf 5-8x=45 \\\sf -8x=45-5 \\\sf -8x=40 \\\sf \frac{-8x}{-8} = \frac{40}{-8} \\ \boxed{\sf x=-5}$