3x+5y=21quad " and "quad 2x+3=54" then find "

If 3x + 5y = 21 and 2x +3y = 13 , then find the values of x and y .

(i) x+2y=-7 and 3x-2y=-1, then find the value of x. (ii) If x+y=8 and 4y-x=2, then find the value of y. (iii) If 3x+5y=9 and 5x+3y=7, then find the value of x+y. (iv) If 3x-y=11 and x-3y=17, then find the value of x-y.

If A = [[2,1],[3,-5]] and f(x) = x^2 - 2x + 3 , then find f(A).

If A =[(2,1),(3,5)] and f(x) =x^2 - 2x + 3 then find f(A).

If 2X+3Y=[[-2,21,-5]] and 3X+2Y=[[2,4,0]] then find X and Y

Answer any One question : If (3x - 2y) : (x + 3y) = 5 : 6, then find the value of (2x + 5y) : (3x + 4y).

If A=[[2,1],[3,-5]] and f(x)=x^(2)-2x+3 , then find f(A) .

If (2x + 3,y-1) =(3,5) , then find x and y.