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Solve for x and y 5÷x+6y=13 3÷x +4y=7 |
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Answer» 5/x+6y= 13---(1)3/x+4y= 7---(2)multiple by 2 in equation 1 3 in eq 210/x+12y= 269/x+12y= 21by subtracting 10/x-9/x= 26-2110-9/x= 55x= 1x= 1/5putting the value of X in eq 15/x+6y= 135/1/5+6y= 1325+6y=136y= 13-25=-12y= -12/6= -2 5/x+6y=13; 3/x+4y=7; 1/x=k; 5k+6y=13; 3k+4y=7; 3(5k+6y=13); 15k+18y=39; 5(3k+4y=7); 15k+20y=35/ 2y=4; y=2; 5k+6(2)=13; 5k=13-12=1; k=1/5=x |
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