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17-12-2019
Mathematics

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one number is 4 more than another. the sum of the numbers is 20. Find the numbers.

explanation needed

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hyperrspace hyperrspace

17-12-2019

x + (4 + x) = 20

2x + 4 = 20

2x = 16

x = 8

Proof

x + (4 + x) = 20

8 + 4 + 8 = 20

12 + 8 = 20

20 = 20

The numbers are 8 and 12.

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