What is 2n plus 4 plus 17 equals 9?

Answer 1

To answer these types of questions, we also work out the known numbers first, in this case it is the 4+17. 4+17=21 so now our equation looks like this:

2n + 21 = 9. To work out the exponent, in this case the n, we shift ONE of the numbers over the equal sign, in this circumstance, let's use the 21. Note that the 21 is positive. Since we move the 21 over the equals sign, we have to make the number the opposite, in this case we have to make the 21 NEGATIVE (positive negative +-) so now it looks like this:

2n= 9-21. 9-21 you can't do but you can do it while using directed numbers. 9 -21 = -11.

2n=-11. Since we have to move the 2 over the equals sign, we have to make it the opposite. Realise the 2 is attached to the n which means it is 2 TIME n. Since we have to make it the opposite it looks like this:

n= -11 divided by 2. Now we just have to work it out. Let's forget about the negative sign and work out 11/2 which equals precisely 5.5. Now we substitute this into out final equation and thus:

n=5.5