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26-10-2016
Mathematics

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5 times a number is less than 2 times that same number minus 9, what must be the value of the number?

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Аноним Аноним

26-10-2016

EQUATION: 5x = 2x - 9
Add 9 to both sides
NEW EQUATION: 5x + 9 = 2x
Subtact 5x from both sides:
NEW EQUATION: 9 = -3x
Divide -x on bith sides
NEW EQUATION: -3 = x, or x=-3

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