Question

please solve fast a,b and c

Answer 1

Step-by-step explanation:

sorry

(c)--not solve

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Answer 2

Answer:

ur answer is.....

Step-by-step explanation:

x - 3y -7 =0

x - 3y = 7.............[ 1 ]

3x - 3y = 15..........[ 2 ]

substract eqn 1 and 2

-2x = -8

-x = -8/2

-x = -4

x = 4

put x = 4 in equation 1

x - 3y = 7

4 - 3y = 7

-3y = 7-4

-y = 3/3

y = -1

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