Question 387180
If 2x + 2y = 10 
ans y = x + 1, 
what is the value of x? 
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Divide thru the 1st eq. by 2 to get:
x + y = 5
x - y = -1
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Add and solve for "x"
2x = 4
x = 2
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Since x+y = 5
2+y = 5
y = 3
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Solution: (2,3)
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Cheers,
Stan H.