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6x+5y=7x+3y+1=2(x+6y-1) Find the value of x and y. |
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Answer» x=17and y=10 6x+5y=2(x+6y-1)6x+5y=2x+12y-26x-2x+5y-12y=-24x-7y=-2 ------------------(1)Again,7x+3y+1=2(x+6y-2)7x+3y+1=2x+12y-47x-2x+3y-12y=-4-15x-9y=-5 -------------------(2)Multiplying eqt.(1) by 5 and (2) by 4 20x-35y=-10 20x-36y=-20 ~~+~~~+~ y=10 Put y=10 in any eqt. 4x-7y=-2 4x-7×10=-2 4x=-2+70 x=68/4=17 |
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