Question

If three times the sum of two number is 42 abd five times their difference is 20 find the numbers.

Chapter Equations Grade 10 ​

Answer 1

One number is 5 and the other number is 9

Explanation:

Answer 2

5 and 9

Explanation:

3(x+y) = 42

5(x-y) = 20

3/3 (x+y) = 42/3

5/5 (x-y) = 20/5

x+y = 14

x-y = 4

x-x = 0

y-(-y) = y+y = 2y

14-4 = 10

2y = 10

2/2 y = 10/2

y = 5

x-5 = 4

x = 4 + 5

x = 9