Find x, if `x+2y=7` and `3x-2y= -1`,

Solve x + y = 7 and 3x - 2y = 11.

Find the value of x, if 2x+y=7 and y=-3

Find the value of y in the equation 2x+y=7 , if x=2 . Find x if y =-1 .

Find the equation of the line passing through the point of intersection of the lines x+2y-5=0 and 3x+7y-17=0 and is perpendicular to the line 3x+4y-10=0

find dy/dx if x^3 + x^2 y + x y^2 + y^3 = 81

By equating coefficients of variables solve the following equation 5x + 7y = 17 , 3x-2y = 4

Find the value k if the following equations are consistent 3x+y-2=0,kx+2y-3=0 and 2x-y=3