Problem
11 less than 4 times a number is 55. Find the number. Please set up a key, set up the equation, and then solve the equation.
Solution
For this case the best equation would be:
4x -11= 55
Now we can solve for x, adding 11 in both sides we got:
4x = 66
And if we divide both sides by 4 we got:
x = 66/4 = 33/2 = 16.5
