Question

Slove equationx+y=8and2x-y=7

Answer 1

Answer:

Step-by-step explanation:

y = 8 - x

2x - (8 - x) = 7

3x - 8 = 7

3x = 15

x = 5

y = 3

Answer 2

Step-by-step explanation:

$x + y = 8.........(i) \\ 2x - y = 7.......( ii) \\ add \: equation \: (i) \: and \: (ii) \\ x + y + 2x - y = 8 + 7 \\ 3x = 15 \\ x = 5 \\ now \: put \: value \: of \: x \: in \: eqyation \: (i) \: \\ 5 + y = 8 \\ y = 8 - 5 \\ y = 3$