Answer:
per substitution : y=-8x+15
we replace y in the 2nd equation
-8x+15-2(-8x+15)=-24
-8x+15+16x-30=-24
+8x-15=-24
-8x=-24+15
-8x=-9
x=9/8
y=-8x+15
y=-8*9/8+15
y= -9+15=6
Answer: see attached
Explanation:
9.4m questions
12.2m answers