Four more than twice a number is 8

let x is the number

twice a number is 2x

Four more than twice a number: 2x + 4

Four more than twice a number is 8:

2x + 4 = 8

If solve for x then

2x + 4 = 8

subtract 4 to both sides

2x + 4 - 4 = 8 - 4

Simplify

2x = 4

Divide both sides by 2

2x/2 = 4/2

Simplify

x = 2