Question

ces of
Solve the equation graphically
lt x+ y = 7,5x +2y = 20
​

Answer 1

Answer:

x=7-y

put the above in 2nd

5(7-y)+2y=20,

35-5y+2y=20

35-3y=20

-3y=20-35

y=-15/-3

y=5 and x=2

Answer 2

x+y=7

then the possible chances are(1;6),(2;5),(3;4)

and

5x+2y=20

the only possible way is (2;5)

Answer:

therefore x=2 and y=5