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Why do you need a common denominator when adding and subtracting fractions but not when you multiply or divide fractions?
For subtracting and adding you cannot add or subtract unalike things. For multiplication and division you can multiply by whatever you want. In some maths you even multiply by variables such as "x". Or divide by them.
Who invented adding and subtracting?
Addition and subtraction are prehistoric, they were used before man could write, even som animals addd and subtract (raven, crows, apes, etc.)
If the sum of three consecutive even integers is 2010 find the integers?
You can find this by dividing 2010 by three and adding two for the highest integer and subtracting 2 for the lowest integer. 2010/3=630, so the numbers are 628, 630 and 632
When subtracting even and odd numbers what is the rule?
An even number can be divided by 2 evenly. An odd number will have a remainder of 1 when divided by 2. Even minus odd is odd.
Is 84 minus 17 even or odd?
It will be odd. Subtracting an odd number from an even number, gives an odd number. 84 - 17 = 67
How can you make seven even without adding or subtracting a number?
multiply seven by 2 which is fourteen
How is seven made even?
By adding 1....?
Why do you need a common denominator when adding and subtracting fractions but not when you multiply or divide fractions?
For subtracting and adding you cannot add or subtract unalike things. For multiplication and division you can multiply by whatever you want. In some maths you even multiply by variables such as "x". Or divide by them.
How t make a even number out of 61915?
We can do so in two ways: Adding or subtracting an odd number by 61915. Multiplying 61915 by an even number.
Use of natural number in real life?
natural numbers are used in real life for counting, adding, subtracting and even for calculting money purposes
Why it is necessary to have common denominators when adding or subtracting rational expressions?
Without such denominators, the addition makes no sense, because you're adding different "sizes" of fraction, per se. Think of it like trying to add 5 feet and 5 inches without converting, and saying the whole thing equals 10 feet. 5 inches clearly are not the same as 5 feet (they aren't even half a foot).
Who invented adding and subtracting?
Addition and subtraction are prehistoric, they were used before man could write, even som animals addd and subtract (raven, crows, apes, etc.)
Why is 2 a factor of every other number?
2 is a factor of every even number. Adding or subtracting one from an even number leaves an odd number. Since even and odd numbers alternate, 2 will be a factor of every other number.
Is yugioh math?
yes yugioh is math it includes adding, subtracting, multiplying and, even dividing if you ask me i would say it is one of the best math games plus it teaches you a lot of things
How do you measure 7 liters from 10 liters using 4 and 2 liter jars?
You cannot. Adding or subtracting with 10 L, 4 L and 2 L means you can only have an even number of litres.
How can I lose my belly fat with a diet?
The best diet in seeking a flat belly is simply adding water to your diet. Eight to 10 glasses of water will shed pounds without even having to starve yourself. Of course subtracting some of the high calorie foods along with a low aerobic exercise plan will help you obtain your goal faster.
If a negative number is subtracted from a positive number will that result always be positive?
"No. For instance -19 - 17 = -36. Not -2 as it may seem.-5 - 34 = -39. Even though a quick glance would make it seem to be 29"That is wrong... you are subtracting a positive from a negative the question consists of subtracting a positive from a negative. 15 {a positive} - (-5) {a negative} = 20 you minus the negative sign on the -5 to make +5 but we write it just as 5.Anyways to answer the original question. Yes Subtracting a number is the same as adding it's opposite, therefore adding a positive to a positive will always result in a positive.
