Question

solve this simultaneous equation,10x+3y=75,6x-5y=11

Answer 1

Answer:

x =6 y = 5

Step-by-step explanation:

10x + 3y = 75

10x = 75-3y

x = 75 - 3y/10 (let this be the third equation)

Putting x in 2nd equation

6(75 -3y /10) -5y =11

[450 - 18y/10] - 5y = 11

Taking LCM

450 -18y - 50y/10 = 11

450 - 68y = 110

-68y = 110 - 450

-68y = - 340

y = 340/68

y= 5

Putting y in 3rd equation

x = 75-3(5)/10

x= 75 - 15 /10

x= 60/10

x= 6