Rational numbers are real numbers that cannot be expressed as the square root of any positive integer.
Rational numbers are numbers that can be expressed as a fraction or quotient of two integers, where the denominator is not zero.
Rational numbers are numbers that can be expressed as an infinite decimal sequence.
Rational numbers are only positive integers that can be divided by 1.
1/8
-5/4
-1/8
7/8
To subtract rational numbers, find a common denominator and subtract the numerators.
Subtract the numerators directly without considering the denominators.
Divide the denominators and then multiply the numerators.
Add the rational numbers with opposite signs.
5/7
-1
3/49
1/7
Ignore the signs and perform regular subtraction.
Remember to change the sign of the number being subtracted, which is equivalent to adding its opposite.
Convert both numbers to positive before subtracting.
Always subtract smaller magnitude from larger regardless of sign.
1/2
-1/6
7/6
1/6
2/3
6/18
0
4/9
Double the numerators and find the smallest common result.
Use any number larger than the numerators.
A common denominator is a shared multiple of the denominators of the fractions involved. It allows you to add or subtract fractions easily by bringing them to equivalent terms.
Multiply the numerators and denominators directly.
-7/8
-5/8
1/4
-9/8
1/4
2/3
3/4
1/3
In subtraction, you switch to addition by adding the opposite of the number being subtracted.
The signs remain unchanged, and you add both numbers.
You always switch signs for both numbers.
Subtract as if numbers are neutral, ignoring signs.
1/2
3/6
-1/2
3/2
3/10
9/10
6/10
1/2
Add the numerators if the denominators are the same, otherwise find a common denominator and then add.
Add the denominators first, then the numerators.
Find a common multiple of the numerators.
Multiply both numbers and divide by their common denominator.
Subtract the smallest number from the largest regardless of their order.
Change subtraction to addition of the opposite by inverting the sign of the second number.
Always switch the signs of both numbers.
Ignore the signs and perform addition directly.