BEDMAS solving for X

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Subject: BEDMAS solving for X
Name: damian
Who are you: Student

Hi, I am having a problem understanding why when using BEDMAS the text book example of the following question has used bedmas and reduced the calculation to 4/3.

Text book formula:
X/200,000 = (X - 90,000) / 150,000
X = 4/3 * (X - 90,000)
X = 360,000

My solution: I always thought that when you do something to one side you do the same to the other. Why would the equation bring the 200,000 / 150,000 down to 4 / 3
I would think it would look something like this.
X/200,000 = (X - 90,000) / 150,000
X = 200,000*((X - 90,000) / 150,000)

Hi Damien. You are right, but so is the text book. 200 000/150 000 equals 4/3.

X = 200,000*((X - 90,000) / 150,000)
X = 200,000 / 150,000 * (X - 90,000) (because of the commutative property)
X = 4/3 * (X - 90,000) (reducing the fraction)

Stephen La Rocque.>

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