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25 15

Lvl 1

12

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What is the sum of 9 and the difference of 3

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20 30

Q: What is the sum of 40 and a difference of 10?

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2 Numbers are a and b. We have( a>b) a+b=40(1) and a-b=10(2) a=10+b( from 2. Subtracts both side by b) => 10+b+b=40 (from 1. Substitute a with 10+b) => 10+2b =40 => 2b =30 => b =15 =>a=10+15=25 => a=25 b=15.

The sum of two numbers between 20-40 is 58. The difference is 12

The two numbers are 10 and 2

10

20.

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25 and 15

15 and 25

2 Numbers are a and b. We have( a>b) a+b=40(1) and a-b=10(2) a=10+b( from 2. Subtracts both side by b) => 10+b+b=40 (from 1. Substitute a with 10+b) => 10+2b =40 => 2b =30 => b =15 =>a=10+15=25 => a=25 b=15.

The numbers are 25 and 15

The numbers are 25 and 15

It's 25 and 15

Thw two numbers are 25 and 15 because 25+15 = 40 and 25-15 = 10

The two numbers needed are 25 and 15

10 + 4 = 14 10 x 4 = 40 10 - 4 = 6 or 4 - 10 = -6 so your answer is 6 or -6

50

40