Question

solve the following x/2+y=8, x-y=7​

Answer 1

Answer:

x=10,y=3

Step-by-step explanation:

Eqn x/2+y=8

multiply equation by 2

x+2y=16 (1)

x-y=7 (2)

Eqn(1) + 2×[Eqn(2)] on both sides

x+2y +2x-2y = 16+14

3x= 30

x=10

putting value of x in Eqn (1)

10+2y= 16

2y=6

y=3

Answer 2

x-y=7

x=7+y

now

x/2+y=8

putting the value of x

7+y/2 +y=8

7+y+2y/2 =8

7+3y=8×2

7+3y=16

3y=16-7

3y=9

y=9/3

y=3

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