Question

Determina el valor de x:
-5(x+4)=20
-8(x-45)=2(x+2)
(menos) -(-2x-6)= -26

Answer 1

-5(x+4) = 20
x+4=-20/5
x+4= -4
x = -8

-8(x-45)=2(x+2)
-4(x-45)= x+2
-4x -180=x+2
-180-2=x+4x
5x=-182
x=  - 182/5

(menos) - (-2x-6)=-26
-2x - 6 = -26
 -6+26=2x
20=2x
x=20/2
x=10