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Best Answer
19 - 7 = 3x Simply subtract 19 from 7 on the left side:
12 = 3x
So you need 3 of x to get 12...sounds a bit like 3 times 4, doesn't it? After dividing both sides by 3, you can see that this is true:
12/3 = x
4 = x
So, x is equal to 4.
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