Answer:
x = [tex]\frac{-40}{7}[/tex] , y = -1.71
Step-by-step explanation:
sub y = x+4 in the first equation to get:
12 x - 5 (x+4) = -20
Simplify:
12 x - 5 x + 20 = -20
Further simplify:
7 x = - 40
Divie both sides by 7 to get:
x = [tex]\frac{-40}{7}[/tex]
--> x = -5.7
Sub x = [tex]\frac{-40}{7}[/tex] in the second equation to get:
y = [tex]\frac{-40}{7}[/tex] + 4 = -1.71
