Answer:
x = -9.5
y = -2.5
Step-by-step explanation:
to evaluate this linear system of equation, we would say that
let
x = 3y - 2................................................ equation 1
x= -7y + 8.............................................. equation 2
substitute equation 2 into equation 1
3y -2 = 7y + 8
collect the like terms
3y -2 -8= 7y
-10 = 7y -3y
-10 = 4y
divide both sides by 4
-10/4 = 4y/4
-2.5 = y
y = -2.5
put the value value of y into equation 1
x = 3y - 2................................................ equation 1
x = 3(-2.5) -2
x = -75 - 2
x = -9.5
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