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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3 years ago

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1. John began his job making $25 the first day. After that he was paid $6.75 per hour. a) Use the equation y 6.75x +25 to comple

iren [92.7K]

Answer:

a. Chart (attached)

b. and c. graph attached

Step-by-step explanation:

a. We use the equation given to us and plug in the values of "x" that have been shown to find the corresponding values of y.

So, when x=0, $y=6.75\times 0+25=25$

when x=20, $y=6.75\times 20+25=160$

when x=40, $y=6.75\times 40+25=295$

b. The graph has been shown in a similar manner. All the three points of part a are connected to form the straight line y=6.75x+25. So, we have (0,25), (20,160) and (40, 295)

c. The y axis is the earnings in dollars and the x axis is the number of hours worked.