Question

If x + y = 6 and 3x - y = 4, find the value of x-y?
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Answer 1

Answer:

x + y = 6

3x - y = 4

4x= 10

x = 10/4 = 5/2

x + y = 6

y = 6 - 5/2

   = 12-5/2

    = 7/2

Explanation:

Answer 2

Answer:

x=2.5

y=3.5

Explanation:

x+y=6

x=6-y...(i)

3x-y=4..(ii)

from (i) &(ii)

3(6-y)-y=4

18-3y-y=4

-4y=14

therefore, y=3.5

x=6-3.5

x=2.5