" 9."27x+31y=85,31x+27y=89

Find the value of (x+y) and (x-y) , if 27x+31y=85 , 31x+27y=89 .

47x+31y=63,31x+47y=15

Solve the following equations. 47x+31y=2,31x+47y=15

Solve the following equations. 27/(x-2)+31/(y+3)=85, 31/(x-2)+27/(y+3)=89 .

Solve the simultaneous equations. 27/(x-2)+31/(y+3) = 85, 31/(x-2) + 27/(y+3)=89

5x + 2y = 31 3x + 7y = 36

Solve the following simultaneous equations. (27)/(x - 2) + (31)/(y + 3) = 85 , (31)/(x - 2) + (27)/(y + 3) = 89

If the mean of the numbers 27+x, 31+x, 89+x, 107+x, 156+x is 82, then the mean of 130+x, 126+x, 68+x, 50+x, 1+x is

If the mean of the numbers 27+x, 31+x, 89+x, 107+x, 156+x is 82, then the mean of 130+x, 126+x, 68+x, 50+x, 1+x is

If the mean of the numbers 27+x, 31+x, 89+x, 107+x, 156+x is 82, then the mean of 130+x, 126+x, 68+x, 50+x, 1+x is