2 times the sum of a number and 8 is equal to the difference of 10 and that number find the number

The equation would look like this

2 (x + 8) = 10 - x

First you distribute: 2x + 16 = 10 - x

Next you isolate the variable by adding x to each side and subtracting 16 from each side: 3x = 10 - 16

Simplify: 3x = - 6

Divide both sides by 3: x = - 2