Question

check whether the following pair of linear equations has a unique solution.If yes , find the solution.15x-7y=66. 7x+2y= 15​

Answer 1

Answer:

15x-7y=66 ....(1) *2

7x +2y=15 .....(2) *7

We get,

30x-14y=132

49x+14y=105

___________

79x=137

x=137/79