x+y=1 2x-y=-2
i know the answer is -1/3 and 4/3 ut how did i get that???
Start by adding the two equations:
x + y = 1
2x - y = -2
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3x = -1
Divide both sides by 3.
x = -1/3
Substitute that into the first equation.
-1/3 + y = 1
Add 1/3 to both sides
y = 1 1/3, which is 4/3