Question

solve 3x-2y=5,2x+7y =4 by elimination​

Answer 1

Answer:

3x-2y=5-----------(1)×2

2x+7y=4-----------(2)×3

6x-4y=10

6x-21y=12

-___+______

17y=-2

y=-2/17

put y in eq. (1)

3x-2y=5

3x-2(-2/17)=5

3x+4/17=5

51x+4=5×17

51x=85-4

51x=81

x=81/51