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3 years ago

The sum of 2 numbers is 25. Their difference is 7. Find the numbers. Let x=1st number and y=2nd number

Mathematics

1 answer:

Alex Ar [27]3 years ago

7 0

Answer:

x= 16 and y = 9

Step-by-step explanation:

1 st equation ; x+y = 25

2 nd equation ; x- y = 7

from 1 st equation

x = 25 - y

now putting value of x in 2 nd equation

x- y = 7

25 - y-y = 7

25 -2y =7

25-7 = 2y

18 = 2y

18/2 = y

y = 9

again

putting value of y in 1 st equation

x = 25-y

x = 25-9

x= 16

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