Question 335640
2x = 2 - y
3x + y = -1
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We want both equation in the standard form (like the 2nd equation)
Put the 1st equation in the standard form
2x = 2 - y
add y to both sides and you have
2x + y = 2; the standard form
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2x + y = 2
3x + y = -1
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multiply the 1st equation by -1, then we can use the addition method
-2x - y = -2
+3x + y = -1
------------------addition eliminates y, find x
x = -3
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Use the original 2nd equation to find y, 
3x + y = -1
Replace x with - 3
3(-3) + y = -1
-9 + y = -1
add 9 to both sides
y = -1 + 9
y = 8
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Check our solutions in the original 1st equation
2x = 2 - y
Replace x with -3 and y with 8
2(-3) = 2 - 8
-6 = -6, equality confirms our solution of x=-3, y=8
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