Question

resolver los siguientes ejercicios de ecuaciones de igualdad
12 - x = x - 8
2 x - 1 = 5 x + 8

Answer 1

Respuesta:

$12 - x = x -8\\\\-x - x = -8 - 12\\\\-2x= -20\\\\x= \frac{-20}{-2}\\\\x= 10\\\\COMPROBACION\\\\12- (10) = 10 - 8\\\\12-10= 2\\\\2= 2$

$2 x - 1 = 5 x + 8 \\\\2 x - 5 x = 8 + 1\\\\-3x= 9\\\\x= \frac{9}{-3}\\\\x= -3\\\\COMPROBACION\\\\2 (-3)- 1= 5 (-3)+8\\\\-6 - 1 = -15 + 8\\\\-7 =-7$