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The sum of two positive integers is 13 the difference between these numbers is 7 what is their product ? Explain :

Could someone please help!

2 Answers

5 votes
a+b=13
a-b=7
add the two equations using system of equations
2a=20
a=10
10+b=13
b=3
User Evolon
by
8.3k points
4 votes

Answer:

Explanation:

Let one number be x

Other number = 13 - x {as sum of two numbers is 13}

x - [13 -x] = 7 { difference of two numbers is 7}

x - 13 +x =7

2x - 13 = 7

2x = 7 + 13

2x = 20

x = 20/2

x = 10

One number = 10

Other number = 13 - 10 = 3

Product = 10 * 3 = 30

User Anton Morozov
by
8.5k points

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