21yz over 49xyz, what is the answer

3/7x

Step-by-step explanation:

21yz

49xyz

We can break this into pieces

21   1        y          z

--- * * *  

49    x      y          z

Now we can simplify. canceling the y terms and the z terms

3*7   1         1          1

* * *  

7*7    x         1          1

Now we can simplify canceling the 7 terms

3         1        

*

7         x        

We are left with

3/ 7x

5x+40

5(x + 8)

7x - 49

7(x - 7)

18x + 9

9(2x + 1)

15x - 10

5(3x - 2)

step-by-step explanation:

for number one all you have to do is factor 5 out of 5x + 40

for number 2 factor 7 out of 7x - 49

for number three factor 9 out of 18x + 9

for number four factor 5 out of 15x - 10

12

step-by-step explanation:

a triangle's   full angle is 180 degrees so 180 - 156 = 24. 24/2=12