Question

3x-y=7 2x+y=8
System of equations

Answer 1

answer :-

X = 3 , Y = -1

step by step explation :-

from the first equation you know that

y =2x - 7 substitute this expression for y in the second equation we get

3x +(2x - 7 ) = 8

5x - 7 = 8

5x = 15

X = 3

once X is known , we can derive y from

y = 2x - 7 = 2 . 3 - 7 = 6 - 7 = -1

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