Question

the value of x + y if 3x- 2y =5 and 3 y - 2x = 3 is
a) 5
B)3
C)8
D)-8
​

Answer 1

Answer:

$x + y = 8$

Step-by-step explanation:

solution ----->

Given

$3x - 2y = 5................(1) \\ \\ 3y - 2x = 3 \\ - 2x + 3y = 3 \\ 2x - 3y = - 3................(2) \\ \\ now \: substract \: the \: equation \: 1 \: and \: 2 \\ \\ \: \: \: 3x - 2y = 5 \\ \\ - 2x - 3y = - 3 \\ \\ - - - - - - - - - - \\ \\ x + y = 8$

Answer 2

solution

3x-2y= 5. ..... (1)

and

-2x+3y= 3.

2x -3y = -3. ....(2)

now subtract both equations

then

X+ y = 8

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