Question

Solve for x -x + 1 = x + 21

Answer 1

Answer:

$x=-10$

Step-by-step explanation:

$-x+1=x+21$

Subtract 1 from both sides:

$-x+1-1=x+21-1\\-x=x+20$

Subtract x from both sides:

$-x-x=x+20-x\\-2x=20$

Divide both sides by -2:

$\frac{-2x}{-2}=\frac{20}{-2}\\x=-10$