Question

2x+5y=10
5x+3y=20
find the value of x & y.​

Answer 1

Answer:

Equation 1 : 2x + 5y = 10

Equation 2 : 5x + 3y = 20

Here we will multiply

Equation 1 with 3 :

• 6x + 15y = 30

Equation 2 with 5 :

• 25x + 15y = 100

Solving them by subtraction

• 6x + 15y - 25x - 15y = 30 - 100
• (-19)x = (-70)

Minus minus cancel

• 19x = 70
• x = 70/19
• x = 5

Putting value of x in equation 1

• 2(5) + 5y = 10
• 10 + 5y = 10
• 5y = 10 - 10
• 5y = 0
• y = 0

Value of x = 2 and y = 0