SOLUTION: 7x-4y=40 y-x=2

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Question 62419: 7x-4y=40
y-x=2
Answer by funmath(2933) About Me  (Show Source):
You can put this solution on YOUR website!
E1: 7x-4y=40
E2: y-x=2
Solve E2 for y and substitute that in for y in E1.
E2: y-x+x=x+2 -->y=highlight%28x%2B2%29
E1: 7x-4%2Ahighlight%28x%2B2%29=40
7x-4x-8=40
3x-8=40
3x-8+8=40+8
3x=48
3x/3=48/3
x=16
Now substitue x=16 into E2 and solve for y.
y-16=2
y-16+16=2+16
y=18
The solutuion is (16,18)
Happy Calculating!!!