Question

the sum of two numbers is 30 an their difference is 20


what are the two numbers

Answer 1

Answer:

20 n 10

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Answer 2

Step-by-step explanation:

let the two number be x and y

according to first condition:-

x+y= 30--- equation no. 1

according to second condition

x-y=20---- equation no.2

now by adding first and second equation

x+y=30

+ x-y=20

________

2x= 50

x= 50/2

x= 25---- equation no. 3

by substituting the value of x in equation 1.

x+y=30

25+y=30

y=30-25

y=5

therefore, two numbers are 25 and 5.

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