Question

3x - 5 Y = 4 and 9 x - 2y = 7 solve the following pair of equation by elimination method​

Answer 1

Answer:

given: 3x-5y =4;9x-2y=7

to find: the value of X and Y.

Step-by-step explanation:

solution:

3x-5y=4.........(1)

9x-2y=7............(2)

multiply by 3 in equation (1).

9x-15y=12............(3)

substracting equation (3)and (2).

9x-15y=12

9x-2y=7

(-)(+)=(-)

....................

-13y=5

y=5/-13

put the value of Y in equation (1).

3x-5y=4

3x-5×(5/-13)=4

3x+25/13=4

3x=4-25/13

3x=52-25/13

3x=27/13

X=27/(13×3)

X=27/39

X=9/13

the value of X and Y is 9/13 and 5/(-13).