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EleoNora [17]
3 years ago
5

When adding and subtracting numbers do you add and subtract the denominator​

Mathematics
2 answers:
NNADVOKAT [17]3 years ago
4 0

Answer:

No, you don't.

Step-by-step explanation:

The denominator only changes if you're multiplying/dividing. You may need to create an <em>equivalent fraction</em> to add the fractions together, but you <em>don't</em> add or subtract the denominator.

Hope this helps! Have a great day!

kotegsom [21]3 years ago
3 0

Answer:

No, you adjust the numerator and denominator to a common denominator, then do the addition/subtraction operations with with the numerator, and finally reduce it to the lowest fraction.

Example:

1/3 + 3/4 = ?

change to a common denominator  (12 works for 3 and 4)

4/12 + 9/12 = ?

add the 9 and 12

4/12 + 9/12 = 13/12

reduce to lowest form

12/12 = 1 1/12

Step-by-step explanation:

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aliina [53]
<span>|5x - 1| < 1
-1 < 5x - 1 < 1
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8 0
2 years ago
If you divide 30 by half and add ten, what do you get?
Pavlova-9 [17]

Answer:

70

Step-by-step explanation:

Dividing is multiplying by the reciprocal.

So 30 divided by 1/2

is like 30(2)=60

Then add 10 so 60+10=

70

5 0
3 years ago
Read 2 more answers
What is 1/3 multiply by 5​
Irina-Kira [14]

Answer:

\frac{5}{3}

hope that helps uhh :)

3 0
2 years ago
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Macy is making a border out of strips of wall boarder placed end to end along the 12-foot wall in her room. Each strip is foot l
3241004551 [841]
The answer is 4 let's make a equation to answer it 3*y=12 we need to get y simply multiply 1*3=3 2*3=66 is half way so we can double 2 to 4  4*3=12 so y=4. you only need 4 boards to complete the wall.
4 0
3 years ago
HELPP! Calculate S22 for the arithmetic sequence in which a12=2.4 and the common difference is d=3.4
Natalka [10]

Answer:

Option A is correct.

Value of S_{22} = 15.4

Step-by-step explanation:

Given: a_{12} = 2.4 and common difference(d) = 3.4

A sequence of numbers is arithmetic i.e,  it increases or decreases by a constant amount each term.

The sum of the nth term of a arithmetic sequence is given by;

S_n =\frac{n}{2}(2a+(n-1)d), where n is the number of terms, a is the first term and d is the common difference.

We also know the nth tern sequence formula which is given by ;

a_n = a+(n-1)d                             ......[2]

First find a.

it is given that a_{12} = 2.4

Put n =12 and d=3.4 in equation [2] we have;

a_{12} = a+(12-1)(3.4)

a_{12} = a+(11)(3.4)

2.4 = a + 37.4

Simplify:

a = - 35

Now, to calculate S_{22}

we use equation [1];

here, n =2 , a =-35 and d=3.4

S_{22} = \frac{22}{2}(2(-35)+(22-1)(3.4))

S_{22} = (11)(-70+21(3.4))

S_{22} = (11)(-70+71.4)

S_{22} = (11)(1.4)

Simplify:

S_{22} = 15.4

Therefore, the sum of sequence of 22nd term i.e, S_{22} = 15.4

8 0
3 years ago
Read 2 more answers
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