Ensure that the denominators are the same when adding or subtracting fractions.
Dissimilar fractions are fractions whose denominators are different. Any rules will depend on what you wish to do with them.
You multiply the fractions until the denominators are equal. Then, you subtract.
your mom is 2
Subtracting a negative is the same as adding the equivalent positive. For example, subtracting minus 10 is the same as adding 10.
If the denominators are the same, just add or subtract the numerators. For example, 2/7 + 3/7 = 5/7. am i right?
They aren't. The rules are the same as those for adding/subtracting or multiplying integers. Just be careful of the decimal point's location.
- when adding or subtracting in scientific notation, you must express the numbers as the same power of 10. This will often involve changing the decimal place of the coefficient.
to subtrct integers ,rewrite as adding opposites and use the rules for addtion of integers..
line up the decimal point when your adding and subtracting. add annex a zero when you have extra number. sometimes you can use a number line.
Parentheses, exponents, multiplication and division, addition and subtraction.
When multiplying something with exponents, you add it. When dividing something with exponents, you subtract it.
If the denominators are the same (which is what I understand by "similar fractions"), just subtract the numerators (the upper part).
I assume you mean, with different denominators. If you want to add the fractions, subtract them, or compare them (determine which one is greater), you have to convert them to similar fractions (fractions with the same denominator) first. Converting to similar fractions is not necessary, and usually doesn't even help, if you want to multiply or divide fractions.
first must find Least Common Denominator http://www.loisterms.com/lois21.htm First of all, if you want to know about adding fractions, check out "How to Add Fractions". Be sure to follow the math examples carefully. To subtract fractions, follow the same steps as for adding, except subtract where you would add. Now about those positive and negative signs. The rules are the same whether you are working with integers or fractions. I will give you a method of learning the rules for the signs that has worked for many other students. Copy off this "Rules for Integers" chart and paste it on a large index card. Put the card in your math book or folder and refer to it often while you are doing your homework. If you keep using the card, you will get better with the signs.
You subtract a polynomial by adding its additive inverse. For example, subtracting (x - y) is the same as adding (-x + y). Alternately, you can simply subtract similar terms - that is, subtract the coefficients (the numbers) for terms that have the same combination of variables.
Adding integers, if they have the same sign, add their absolute values and keep the same sign. Subtracting, change the sign of the 2nd number and the add using rules of addition. Multiplying and dividing, Divide the absolute values, if the signs are the same the answer is positive, if the signs are different the answer is negative.
you have to make sure they have the same denominator (bottom bit) For example, 1/2 + 1/4 = 2/4 + 1/4 and then just add the top halves normally: 2/4 + 1/4 = 3/4
addition subtraction multiplication division
look in a dictionary
you take the last digit in the first one and add/subtract it to the last digit in the second one and that is your answer
the rules that you have to apply when adding ,subtracting, multiplying or dividing go to this webpage for a proper explanation http://math.about.com/od/algebra/a/distributive.htm
ADDING: same sign, add and keep that sign. opposite sides, subtract their absolute values and use the sign of the number with the larger absolute value SUBRTRACTING: change the sign of the subtrahend (2nd number) then ADD using rules above.