1+23-4+56+7+8+9+100
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When adding or subtracting fractions first make sure that the denominators are the same if they aren't then find the lowest common denominator and alter the fractions accordingly
Compensation in math means, adding and subtracting the same number to make the sum or difference easier to find.
In order to subtract two rational expressions by simply subtracting their numerators you must make sure that their denominators are equal.
the most important thing is to change the denominators so u can make common denominators
2 odd numbers added together equal an event number. to even numbers added together equal an even number. it is impossible to make 4 odd numbers equal an even.