4x-7y=15 and -8x+14y=-30 using elimination

using elimination method
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1 Answer

line 1...4x-7y=15...or 8x-14y=30...or 7y=4x-15

line 2...-8x +14y=-30... or -4x+7y=-15

line 1+line2...(8x-8x) +(14y-14y)=30-10

BOTH LINES THE SAME...on top av eech other
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