4c - 11 = 4c +21

! i have literally no idea

-4c - 11 = 4c +21                                        add 4c to both sides

-4c - 11 + 4c = 4c + 21 + 4c                        simplify

- 11 = 8c + 21                                              subtract 21 from both sides

- 11 - 21 = 8c + 21 - 21                                simplify

- 32 = 8c                                                      divide both sides by 8

c = - 4

That's it

I hope you got the idea

Move all terms containing C to the left side of the equation. -8c-11=21

Move all terms not containing C to the right side of the equation. -8c=32

Divide each term by -8 and simplify.

32/8 equals -4

C=-4

Okay so n is going to represent our first number. since the second number of five times greater than n, the second number will be represented as 5n. for us to figure out the two  numbers we need to have  the value of n first. this is going to be done by adding the two numbers together, n and 5n. it can be simplified as 6n, which the problem states is equal to 72. divide 72 by 6n and you can solve for n.  n+5n=726n=72n=(72/6)n=12  now that we know the value of n, we have to multiply 5 times 12 which equals 60. so our two numbers/integers are 12 and 60