SOLUTION: If 21 is added to a number, the result is 38 less than twice the number. Find the number

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Question 989888: If 21 is added to a number, the result is 38 less than twice the number. Find the number
Answer by farohw(175) About Me  (Show Source):
You can put this solution on YOUR website!

We will use "x" to represent a number.

If 21 is added to a number --> (x + 21)
the result is 38 less than twice the number --> (= 2x - 38)

The equation:
x + 21 = 2x - 38

Solve,
x - 2x = -21 - 38
-x = -59 (divide both sides by -1)
x = 59 is the final answer.

If you plug x = 59 back into the equation both sides will be equal.