solve x + 4y = 2, 2x - y = -14
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Answer:
x+4y=2.....eq(1st)
2x-y=-14....eq(2nd)
now multiply eq 1 by 2
(x+4y=2)2
2x+8y=4....eq(3rd)
now subtract eq2nd by eq3rd
2x+8y=4
2x-y =-14
- + +
________
9y=18
y=18/9
y=2.....eq(4th)
now put eq 4th in eq2nd
2x-y=-14
2x-2=-14
2x=-14+2
2x=-12
x=-12/2
x=-6
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