Question

POOR FAVOOR ME AJUDEM!!

Dada as funçoes determine os valores de 'x' :

a) Y = 4x + 12, p/ Y= 4


b) Y = - 4x - 100, p/ Y = 20

Answer 1

a)4x+12 =4
   4x=-8
   x=-2

b)-4x-100=20
    -4x=120
         x=-30