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find a number that is 50 greater than its opposite

Sagot :

50÷2=25
soo 25 is 50 greater than -25
We know that for every number, to find its difference between that number and its opposite, is to double the number. For example, 10, the opposite of it is -10 and to find 10-(-10) mentally, we multiply 10 by 2=20. So easy! If you are asked about a number that is 20 greater than its opposite, then divide 50 by 2 and you are done!

50/2=25  

25-(-25) =50, True.