2^3 + 10 - x = 16
OK, so first, you figure out what 2^3 is and to do this you multiply 2 by it self 3 times so..
2 * 2 * 2 = 8
The equation now looks like this: 8 + 10 - x = 16
Now add like terms, 8 + 10 = 18
So that the equation looks like this..
18 - x = 16
To solve this problem, you have to subtract 18 from both sides of the equal sign to get it to look like this..
- x = -2
Now, you divide both sides by -1 to get..
x = 2
Hope this helps.