Question

The sum of two numbers is 17 and their difference is 3.

Answer 1

Answer:

LET THE NUMBER BE X AND Y , NOW according to question X+Y=17 SUPPOSE THIS AS A EQ. 1 AND, X-Y= 3 SUPPOSE ITBAS EQ.2 NOW

Answer 2

Answer:

Let the two numbers be x and y.

According to the questions

x + y = 17

x - y = 3

x = 3 + y

so,

x + y = 17

3 + y + y = 17

3 + 2y = 17

2y = 17 - 3

2y = 14

y = 14/2

y = 7

then,

x + y = 17

x + 7 = 17

x = 10

therefore,

Sum = 10+7 = 17

Difference = 10-7 = 3