To solve a two step equation with a fraction like the following:
(3⁄10)x + 5 = 11 you need to undo what has been done to the x using inverse operations. Think of it as going backwards while doing PEMDAS, or Order of Operations. So if I were to go backwards I would undo the addition first by completing the inverse operation, subtraction. So I would subtract 5 from both sides to get:
(3⁄10)x = 6
O.k. so now we have 3⁄10 being multiplied by x so to undo that we have to divide x by the reciprocal, which is 10⁄3. To get the reciprocal just remember to flip the numerator and denominator. O.k., so after doing that we have:
x = 60⁄3
Our last step is to simplify 60⁄3 to just 20, so:
x = 20!
And it is as simple as that!
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