For simultaneous equations in variables x and y, `D_x = 49, D_y = - 63, D = 7` then what is x ?

Choose the correct alternative for each of the following questions: For simultaneously equations in variables x and y, if D_x=49,D_y= -63 and D=7, then what is the value of X ?

For simultaneous equations in x and y , if D_(x) = 49 D_(y) = - 63 and D = 7 , then what is the value of x ?

For simultaneous equations in variables x and y, if D_x = -14, D_y =7 and D = -35, then find the values of x and y.

For simultaneous equations in variables x and y, if D_x = -14, D_y =7 and D = -35, then find the values of x and y.

For simultaneous equations in x and y , if D_(x) = 39 , D_(y) = 26 and D = 13 , Then what is the value of x ?

For certain simultaneous equations in variables x and y , if D_x =25, D_y=40, D=5 find the value of x .

For simultaneous equations in x and y , if D = 30 , D_(x) = -18 , D_(y) = -12 , then what is the value of y ?

For certain simultaneous equations in variables x and y , if D_x =12, D=4 , find the value of x .

For certain simultaneous equations in variables x and y, if D_y =6, D=-3, find the value of y .

For simultaneous equations in x and y , if D_(x)=25 , D_(y)=50 and D=5 , then what is the value of x ?