1.

Solve by elimination 3x-y=7 and 2x+5y+1=0

Answer»

3x-y=7.....(1)×22x+5y=-1....(23 on multiply in 2 eqn 1 and 3 on eqn 2WE get6x-2y=14....(3)6x+10y=-3...(4)on subtracting eqn 3 and 4we get 8y=17y=17/8put value of y in eqn 13x-17/8=7×=73/24



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