19) Solve 2x+y=6 and
2x-y+2=0
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2x + y = 6
y = 6 - 2x (1)
2x - y +2 = 0
Putting the value of y we get
2x - 6 + 2x +2 = 0
4x + -4 = 0
x = 1
y = 4
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