Question

Solve x-3y=7 ;
3x-3y=15​

Answer 1

Answer:

x-3y=7 _____________________________¹

3x-3y=15______________________²

divide equation 2 by 3

so, x-y=5

hence subtract equation 2 from 1

we got , -2y=2

y = -1

hence take this value in equation 1

x- (-1) 3 =7

x+ 3 =7

x= 4

hence this is your answer

x=4

y=-1

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