Answer:

1.D

2.D

3.B

Step-by-step explanation:

Try kulang mag answer

Answer:

Step 1

We can't subtract two fractions with different denominators. So you need to get a common denominator. To do this, you'll multiply the denominators times each other... but the numerators have to change, too. They get multiplied by the other term's denominator.  

So we multiply 7 by 6, and get 42.  

Then we multiply 2 by 9, and get 18.  

Next we give both terms new denominators -- 9 × 6 = 54.  

So now our fractions look like this:  

42

54

−  

18

54  

Step 2

Since our denominators match, we can subtract the numerators.  

42 − 18 = 24  

So the answer is:  

24

54

Step 3

Last of all, we need to simplify the fraction, if possible. Can it be reduced to a simpler fraction?  

to find out, we try dividing it by 2...  

Are both the numerator and the denominator evenly divisible by 2? Yes! So we reduce it:  

24

54

÷ 2 =  

12

27

Let's try dividing by 2 again...  

Nope! So now we try the next greatest prime number, 3...  

Are both the numerator and the denominator evenly divisible by 3? Yes! So we reduce it:  

12

27

÷ 3 =  

4

9

Let's try dividing by 3 again...  

Nope! So now we try the next greatest prime number, 5...  

No good. 5 is larger than 4. So we're done reducing.  

There you have it! The final answer is:

7

9

−  

2

6

=  

4

9

Step-by-step explanation: