Answer:
x =
, 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 =
--> x = -5.7
Sub x =
in the second equation to get:
y =
+ 4 = -1.71
Answer:
42
Step-by-step explanation:
7y = 84
y = 84 /7
= 12
So, y =12
Answer:
the answer is D
Step-by-step explanation:
makes sense...