Question

Please help me solve -x-1=x-21

Answer 1

x = 10

Here's how I got my answer:

Step 1: Add x to both sides, which leaves us with
`-1 = x - 21 + x`

Step 2: Simplify
`x - 21 + x` to
`2x - 21`, which leaves us with
`-1 = 2x - 21`

Step 3: Add 21 to both sides, which leaves us with
`-1 + 21 = 2x`

Step 4: Simplify
`-1 + 21` to 20, which leaves is with
`20 = 2x`

Step 5: Divide by sides by 2, leaving us with our answer, x = 10

Answer 2

First, add x on both sides:

-1 = 2x - 21

Add 21 to both sides:

20 = 2x

Divide by 2:

x = 10