SOLUTION: they are asking me to solve each system by substitution or elimination this is an example -8x + 7y = -4 -7x + y = 17

Question 318781: they are asking me to solve each system by substitution or elimination
this is an example
-8x + 7y = -4
-7x + y = 17
Answer by excoastie725(4) (Show Source): You can put this solution on YOUR website!
I am going to show you how to do this by the substitution method because it is setup easier that way.
Step 1:
-7x+y=17
+7x +7x
y=17+7x
Step 2:
-8x+7(17+7x)=-4
-8x+119+49x=-4
119+41x=-4
-119 -119
41x=-123
41x/41 = -123/41
x=-3
Step 3:
y=17+7(-3)
y=17-21
y=-4
The final answer is x=-3 and y=-4

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