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What steps do you use for the following equation x divided by 11 plus 4 equals 7?
Wiki User
∙ 12y ago
Whatever you do to one side of the equation, you must also do to the other side as well. Always work backwards, ie, additions and subtractions are taken out of the equation first rather than the normal calculations where divisions and multiplications are always done first.
x/11 + 4 = 7
x/11 + 4 - 4 = 7 - 4
x/11 = 3
x/11 x 11 = 3 x 11
x = 33
Wiki User
∙ 12y ago
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Think of a simple equation, and the steps must be reversible. For example, 10 divided by 2 equals 5 (10/2 = 5). When the steps are reversed, you get 5 times 2 equals 10 (5 * 2 = 10). However, if you take 10 divided by 0 and consider the answer as x. When you reverse the steps, no matter what the value of x is, you can't multiply it by 0 to get back 6. This also can be proved using the equation y = 1/x. As x approaches 0, y approaches infinity. (limit as x -> 0 (1/x) = ∞)
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