Solve the following pairs of linear equations using cross-multiplication
method: 2x + y=6 and 2x – y +2 = 0
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Step-by-step explanation:
2x+y=6______1
2x-y=2_______2
add both equations
2x+y=6
2x-y=2
_______
x=4
put x=4in equation 1
2x+y=6
2×4+y=6
8+y=6
y=6-8
therefore y=-2
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