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Mathematics 12 Online
OpenStudy (anonymous):

Write the expression \[\frac{4+6a}{5}-\frac{1+3a}{4}\] as a single fraction.

OpenStudy (jdoe0001):

any ideas on the LCD?

OpenStudy (anonymous):

20

OpenStudy (jdoe0001):

yes so.... then \(\bf \cfrac{4+6a}{5}-\cfrac{1+3a}{4}=\cfrac{(20\div 5)(4+6a)-(20\div 4)(1+3a)}{{\color{brown}{ 20}}}\)

OpenStudy (anonymous):

is it 1/2

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