Twice the difference of a number and 4 is 3.

Answer 1

The equation for the above number sentence reads as follows:

2(n-4) = 3

First step: Multiply 2 by (n-4) = 2(n) - 2(4) = 2n-8

Now you have 2n - 8 = 3 for your new equation to solve for the unknown variable n therein.

Second step: Add 8 to both sides of the equation.

2n -8 = 3

+8 +8

Now you have 2n = 11

Third step: Solve for n by dividing both sides by 2

2n = 11

2 2

n = 11 = (mixed number) 5 1

2 2

(decimal) 5.5