Question

find the value of x for which y=20 is a solution of the equation 5x+20y=500

Answer 1

Answer:

putting value of y in given equation, we get,

5x + 20(20) = 500

5x + 400 = 500

5x = 500-400

5x = 100

x = 20 is the final solution.

Answer 2

Answer:

x=20

Step-by-step explanation:

5x+20y=500

putting y=20

5x+20×20=500

or, 5x+400=500

or, 5x=500-400

or, 5x=100

or, x=100/5

or, x=20