Question

Solve the equation Graphically (ii) x + y = 7, 5x + 2y = 20​

Answer 1

Step-by-step explanation:

x + y

x = 7-y

5x + 2y = 20

5(7-y) + 2y = 20

35-5y +2y =20

35 -3y=20

-3y =20-35

-3y = -15

y = -15/-3

y= 5

x+5=7

x = 7-5

x = 2

Answer 2

Answer:

5x+2y=20

x+2y =20÷5

x+y=4-2=2