Question

Does anyone know how to solve this x-15=5 or 2x+5=1

Answer 1

`\huge\boxed{x = 20; x=-2}`

Explanation:

In equations, you can perform any operation (with a few exceptions), as long as it is to both sides of the equation. As such, when approached with a problem such as x-15 = 5, isolate the variable, by adding 15 to both sides, changing the problem to x - 15 + 15 = 5 + 15. Then, because -15 + 15 = 0, it becomes x + 0 = 5 + 15 --> x = 20.

In the other scenario: 2x + 5 = 1:

2x + 5 - 5 = 1 - 5

2x = -4

2x ÷ 2 = -4 ÷ 2

x = -2

Hope it helps :) and let me know if you want me to elaborate

Answer 2

Explanation:

First equation: x-15=5

x-15+15=5+15

The answer will be x=20

Second equation: 2x+5=1

2x+5-5=1-5

2x=-4

Divide both sides by 2

The answer will be x=-2