Answer:
x= -20, y= 10
Step-by-step explanation:
Label the two equations:
-7x -10y= 40 -----(1)
x= -2y -----(2)
Substitute (2) into (1):
-7(-2y) -10y= 40
Expand:
14y -10y= 40
Simplify:
4y= 40
Divide both sides by 4:
y= 40 ÷4
y= 10
Substitute y= 10 into (2):
x= -2y
x= -2(10)
x= -20
