Find the value of `y` when `(5y-7)/(3y)=2`

Find the values of x and y when x^(2)+y^(2)-2sqrt(2)x+2sqrt(5)y=-7 .

(a) Draw the graph of the equation 2y-3x=7 Also find the value of y when x=2(1)/(2) and the value of x when y=3(1)/(2) from the graph.

If (2x)/3=(4y)/5=(7z)/9 then find the value of (4x+12y-21z)/(3y) .

Find the value of : 5x – 3y when x = 2 and y = -5

If 2x + y = 23 and 4x - y = 19, find the values of x - 3y and 5y - 2x.

Find the value of the polynomial: y^3-5y-2y^2+3 when y=2 and y=-2

Find the value of the polynomial y^3-5y-2y^2+3 when y=-2

Solve for x & y and find the value of 9x+3y : 2x+5y=13 7x-y=27

Find the value of (x+y) ,if 3x+5y=9,5x+3y=7