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Evaluate the following. 1/2-1/3+1/12

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Evaluate the following. 1/2-1/3+1/12 [#permalink] New post 22 May 2019, 10:46
Expert's post
Evaluate the following.

(a) \(\frac{1}{2}-\frac{1}{3}+\frac{1}{12}\)

(b) \((\frac{3}{4}+\frac{1}{7})(- \frac{2}{5})\)

(c) \((\frac{7}{8}-\frac{4}{5})^2\)

(d) \(\frac{(- \frac{3}{8})}{(\frac{27}{32})}\)

[Reveal] Spoiler: OA
(a) \(\frac{1}{4}\) (b) \(- \frac{5}{14}\) (c) \(\frac{9}{1,600}\) (d) \(- \frac{4}{9}\)



Math Review
Question: 2
Page: 219
Difficulty: medium

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Re: Evaluate the following. 1/2-1/3+1/12 [#permalink] New post 23 May 2019, 07:35
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Carcass wrote:
Evaluate the following.

(a) \(\frac{1}{2}-\frac{1}{3}+\frac{1}{12}\)

(b) \((\frac{3}{4}+\frac{1}{7})(- \frac{2}{5})\)

(c) \((\frac{7}{8}-\frac{4}{5})^2\)

(d) \(\frac{(- \frac{3}{8})}{(\frac{27}{32})}\)

[Reveal] Spoiler: OA
(a) \(\frac{1}{4}\) (b) \(- \frac{5}{14}\) (c) \(\frac{9}{1,600}\) (d) \(- \frac{4}{9}\)



Math Review
Question: 2
Page: 219
Difficulty: medium


(a) \(\frac{1}{2}-\frac{1}{3}+\frac{1}{12}=\frac{6}{12}-\frac{4}{12}+\frac{1}{12}=\frac{6-4+1}{12}=\frac{3}{12}=\frac{1}{4}\)


(b) \((\frac{3}{4}+\frac{1}{7})(- \frac{2}{5})=(\frac{21}{28}+\frac{4}{28})(-\frac{2}{5})=(\frac{25}{28})(-\frac{2}{5})=-\frac{5}{14}\)


(c) \((\frac{7}{8}-\frac{4}{5})^2=(\frac{35}{40}-\frac{32}{40})^2=(\frac{3}{40})^2=(\frac{3}{40})(\frac{3}{40})=\frac{9}{1,600}\)


(d) \(\frac{(- \frac{3}{8})}{(\frac{27}{32})}=(-\frac{3}{8})(\frac{32}{27})=(-\frac{1}{1})(\frac{4}{9})=-\frac{4}{9}\)

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Brent
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Re: Evaluate the following. 1/2-1/3+1/12   [#permalink] 23 May 2019, 07:35
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