Question

Sovel by elimination method 3x-4y=15 and 2x-2y=8

Answer 1

Answer:

2x - 2y = 8........... (× 2)

=> 4x - 4y = 16...................(1)

=> 3x - 4y = 15..................…(2)

equation 1 - 2

4x - 3x = 16 - 15

x = 1

substitute value of x in equation (1)

4(1) - 4y = 16

4 - 4y = 16

- 4y = 16 - 4

- 4y = 12

y = - 3

therefore x = 1 and y = - 3