document.write( "Question 270886: i need refreshment on +, -, mulipling, and dividing fractions. My little sister keeps coming to me for help and i graduated 5 years ago and for got it all. \n" ); document.write( "

Algebra.Com's Answer #198378 by JBarnum(2146) $\"\"$ $\"About$

You can put this solution on YOUR website!
with adding and subtracting you will need a common denominator for example:
\n" ); document.write( " $\"3%2F5%2B3%2F10=9%2F10\"$ multiply the 3/5 by 2/2 and u get 6/10 so 6+3=9
\n" ); document.write( " $\"3%2F5-3%2F10=3%2F10\"$ multiply the 3/5 by 2/2 and u get 6/10 so 6-3=3
\n" ); document.write( "With multiplying fractions u multiply straight across examples:
\n" ); document.write( " $\"%285%2F6%29%284%2F7%29=20%2F42\"$ u can simplify to 10/21
\n" ); document.write( "or
\n" ); document.write( " $\"%285%2F3cross%286%29%29%282cross%284%29%2F7%29=10%2F21\"$ do cross cancelations to make simplifying easier
\n" ); document.write( "with dividing fractions is where it gets tricky. when i divide a fraction by a fraction i alwas multiply by the reciprical of the second fraction.example:
\n" ); document.write( " $\"%282%2F9%29%2F7=%282%2F9%29%287%2F1%29=14%2F9\"$
\n" ); document.write( "the tricky part is when u see something like this:
\n" ); document.write( " $\"%28%282x%2B3%2F2%29%2F%284%2F5%29%29\"$
\n" ); document.write( "then u just need to take it slow
\n" ); document.write( " $\"%28%282x%2B3%2F2%29%285%2F4%29%29\"$
\n" ); document.write( " $\"%2810%2F4%29x%5E2%2B%2815%2F8%29\"$ If x=2 then u could solve this
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\n" ); document.write( " $\"%2810%2F4%29%282%29%5E2%2B%2815%2F8%29\"$
\n" ); document.write( " $\"95%2F8\"$ is what you should get if u try working out this example\r
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