Question

Ecuacion de 90+2x=3.(x-7)

Answer 1

90+2x=3.(x-7)
90+2x=3x-21
90+21=3x-2x
"""111=x """"respuesta"""
buen dia!!!!!!!!

Answer 2

90 + 2x = 3(x -7)
90 +2x = 3x -21
90 + 21 = 3x -2x
111 = x

comprobacion
90+2(111) = 3(111-7)
90 +222 = 3 (104)
31  = 312
x= 111