Question

10) Solve for x and y
4x-y=5 and x+y=5
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Answer 1

Answer:

5x =10

x=2

y=3

..........

Answer 2

Answer:

Combining eq. 1 & eq.2

4x - y + x + y = 5 + 5

5x = 10

therefore, x = 2

x putting in eq. 1

4 ( 2 ) - y = 5

-y = 5 - 8

- y = -3 ........therefore, y = 3

Hence, x = 2 & y = 3