Answer:
Step-by-step explanation:
20. First find the values of the numbers being added.
These numbers have a common denominator, so you can add the numerators
27 + 25 = 52
so the number comes out to
to simplify, divide the numerator and denominator by 4.
So the final fraction becomes
However the question doesn't have this answer and now I am confused. I assumed that the expression was but the picture is a little bit blurry and I have bad eyesight so let me know if it is not. I'm too tired to delete this so next problem.
21.
4x + 8x + 7 + 4
Combine the like terms to get the expression
12x + 11 the answer is c.
Y = -5x + 12 ...............
Answer:
3.9
Step-by-step explanation:
There is two ways to do this
4+4+4 = 12
or
4*3=12
either way the answer is 12 4*3 is just like a shortcut of writing it out instead of having to add the numbers together. When it is "4 times 3" it is saying what is the sum of 4 added 3 times? another example can be 9*9 which is like the simplified version of 9+9+9+9+9+9+9+9+9= 81 9*9 = 81 which is the same thing. try this with other numbers and you will see that it will all result the same way.
* = times or "x" which is the multiplication sign