# Tutor profile: Alex K.

## Questions

### Subject: Pre-Algebra

5X=30 Solve for X

So you need to isolate the X on its own. So in order to do that, you want to divide by 5 into both sides. Whatever you do on one side you have to do on the other. When you divide 5 by 5 you get 1. When you divide 30 by 5, you get 6. So the answer will be 6. And when you plug 6 in for X, and multiple 5 by 6, you get 30. So you know it's correct.

### Subject: Basic Math

What does 4 + .5 - 2 =

So first you want to add 4 + 0.5. Which equals 4.5, then you want to subtract 2.0 from 4.5. You can subtract the 2 from 4 since those are whole numbers and your total will be 2.5.

### Subject: Algebra

Solve the equation: -5x + 30 = 35

So the goal is to solve for X. The first step will be to subtract the 30 from the left side to carry it over to the right side. So it will be 35 minus 30 which equals 5. So now you have -5x on the left side and 5 on the right. In order to isolate the X, we need to divide it by -5 into both sides. So when you divide -5 by -5 it equals 1 which will equal X. And when you divide the 5 on the right side by -5, it will equals -1. So X equals -1. When you plug it into the equation, you have -5(-1) which will equal 5 when multiplied. Add that to 30, and it equals 35. So now you know that you've solved the equation correctly.

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