Question

A) X + 12 = 4x - 3
b) 2(x - 5) + 3(x+5) = 20
ayuda es para 20 min xfavor
doy coronita

Answer 1

Respuesta:

a) x + 12 = 4x -3

x - 4x = -3 - 12

-3x = -15

x = $\frac{-15}{-3}$

x = -5

b) 2(x - 5) + 3(x + 5) = 20

2x - 10 + 3x + 15 = 20

2x +3x = 20 + 10 - 15

5x = 15

x = $\frac{15}{5\\}$

x = 3