Sixteen less than ten times a number is the same as twice the number. find the number

X = unknown number
10x - 16 = 2x
Subtract 10x from both sides to isolate the variable on the right side of the equation.
-16 = -8x
Divide both sides by -8 to get x alone.
2 = x

C. expression because any expression or equation may contain more than one variable