perform the indicated operatios. Simplify the answer if possible.
1.) The sum of 1/7 and 2/7 and 3/7 =
2.) 3/9 and 1/9 is equal to
3.) 10/15 subtracted from 10/15 =
4.) 5/6 – 2/6 = N
5.) What is the difference of 13/40-3/40
Answer:
1.) 6/7
2.) 4/9
3.) 0
4.) 3/6 or 1/2
5.) 10/40 or 1/4
ANSWERS
1) The sum of 1/7 and 2/7 and 3/7 is:
1/7+2/7+3/7=6/7
2) 3/9 and 1/9 is equal to:
3/9+1/9=4/9
3) 10/15 subtracted from 10/15 is:
10/15-10/15=0
4) 5/6-2/6=N
N=3/6
Simplified Form=1/2
5) What is the difference of 13/40-3/40
13/40-3/40=10/40
Simplified Form=1/4
EXPLANATION
1) to perform addition to fractions with the same denominator, copy the denominator and add the numerators.
2) the equation in #2 is solved just like #1
3) to subtract fractions with the same denominator, copy the denominator and subtract the numerator. if the numerator is equal to 0, then the answer is equal to 0.
4) copy the denominator and subtract the numerators. if the numerator and denominator has common factor, divide them to it and thats the simplified form.
3/6, their common factor is 3. divide it to them, then it will be 1/2. the 1/2 has no more common factor so it is their simplified form.
5) do the instruction in number 3 to subtract, and the instruction in number 4 to get the simplified form.
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