14. Find the values of x and y in the following rectangle 2 (x + 3y) 3x + y 7 13 SECTION C (each question carry 3 marks)

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

Find the value of (2x+3y)+(3x+y).

Find the values of x and y in the following rectangle : We know that the opposite sides of a rectangle are equal therefore 3x + y = 7 …(1) x + 3y = 13 …(2) 9x + 3y = 21 [from (1)] {:(" x + 3y = 13"),( " "ul"- - -"),("On subtracting, 8x =8"):} x = 1 Now, from (1), 3 (1) + y = 7 implies y = 7 - 3 implies y = 4 Hence, the required values of x and y are 1 and 4 respectively.

Find the values of x and y in the following rectangle : We know that the opposite sides of a rectangle are equal therefore 3x + y = 7 …(1) x + 3y = 13 …(2) 9x + 3y = 21 [from (1)] {:(" x + 3y = 13"),( " "ul"- - -"),("On subtracting, 8x =8"):} x = 1 Now, from (1), 3 (1) + y = 7 implies y = 7 - 3 implies y = 4 Hence, the required values of x and y are 1 and 4 respectively.

Find for values of x and y 3x+2y=5 2x-3y=7

Find the values of x and y from each of the following (i) (x+y,x-2y)-(7,1) (ii) (2x,x+3y)=(4,5)

Find the values of x and y from each of the following (i) (x+y,x-2y)=(7,1) (ii) (2x,x+3y)=(4,5)

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

Find the values of x, y, z and w if [(x,3x-y),(2x+z,3y-w)]=[(3,2),(4,7)]

If x=1 and y=2, find the values of each of the following algebraic expressions: 3x+2y-7 (ii) x^(2)