Question 335921
{{{(a-1)/(4a)-(2a+3)/a}}} Start with the given expression.



{{{(a-1)/(4a)-(4(2a+3))/(4a)}}} Multiply the second fraction by {{{4/4}}}



{{{(a-1)/(4a)-(8a+12)/(4a)}}} Distribute.



{{{((a-1)-(8a+12))/(4a)}}} Combine the fractions (this is only possible since the denominators are equal).



{{{(a-1-8a-12)/(4a)}}} Distribute.



{{{(-7a-13)/(4a)}}} Combine like terms.



So {{{(a-1)/(4a)-(2a+3)/a=(-7a-13)/(4a)}}}



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