Solve by elimination 3x-y=7 and 2x+5y+1=0
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Answer:
3x-y=7.....(1)×2
2x+5y=-1....(2)×3
on multiply in 2 eqn 1 and 3 on eqn 2
we get
6x-2y=14....(3)
6x+10y=-3...(4)
on subtracting eqn 3 and 4
we get
8y=17
y=17/8
put value of y in eqn 1
3x-17/8=7
×=73/24
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