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When calculating 25 + X, little careless mistakenly regards + as - and the result is 20. What is the correct answer to 25 + X?
25-x=20
x=25-20
x=5
25+x=25+5=30
What is the difference between the result he calculated and the correct one?
25 × (? - 4) is 25? - 100. That is 25? - 4-96. The latter is 96 more
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