SOLUTION: x-7y=10 x-4y=5

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Question 25305: x-7y=10
x-4y=5
Answer by elima(1433) About Me  (Show Source):
You can put this solution on YOUR website!
x-7y=10
x-4y=5
We will solve this by substitution;
first solve equation 1 for x;
x=10+7y
Now substitute that into equation 2 for x;
(10+7y)-4y=5
10+3y=5
3y=5-10
3y=-5
y=-5%2F3
Now plug this answer for y in the equation;
x-4%28-5%2F3%29=5
x-%28-20%2F3%29=5
x+20%2F3=5
x=5-20%2F3
x=15%2F3-20%2F3
x=-5%2F3
Hope you understand
=)