Question

if x=5 and y=2 a solution of linear equation x+y=8​

Answer 1

Answer:

Step-by-step explanation:

Given

x=5   ,  y=2

x+y=5+2(2)=9

5x+2y=5(5)+2(2)=29

x+y=7

5x+y=5(5)+2=27

x=5,y=2 is solution of x+y=7

Answer 2

Step-by-step explanation:

add

y=2 X=5=10xy

X+y=8=-8xy

additional .

2x+5y=10

8x+ -8 =10

-. +

_________

10x-3y =20

20

______

7

= 35