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

2 answers

## Answers

First, add x on both sides:-1 = 2x - 21Add 21 to both sides:20 = 2xDivide by 2:x = 10

x = 10Here's how I got my answer:Step 1: Add x to both sides, which leaves us with [tex] -1 = x - 21 + x [/tex]Step 2: Simplify [tex] x - 21 + x [/tex] to [tex] 2x - 21 [/tex], which leaves us with [tex] -1 = 2x - 21 [/tex]Step 3: Add 21 to both sides, which leaves us with [tex] -1 + 21 = 2x [/tex]Step 4: Simplify [tex] -1 + 21 [/tex] to 20, which leaves is with [tex] 20 = 2x [/tex]Step 5: Divide by sides by 2, leaving us with our answer, x = 10

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