kawaiiotaku201p18ajp kawaiiotaku201p18ajp

03-08-2018
Mathematics

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a/2 - 1/2 and please explain!!

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a5904640 a5904640

03-08-2018

We need to know that:

[tex]\frac{a}{b}-\frac{c}{d}=\frac{a.d-b.c}{b.d}[/tex]

[tex]\frac{a}{2}-\frac{1}{2}=\frac{a.2-2.1}{2.2}=\frac{2a-2}{4}=\frac{a-1}{2}[/tex]

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