How do you subtract #\frac { 15} { 9} - \frac { 2} { 3} #?

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Answer 1 · 2017-09-10T19:49:10

See a solution process below:

To add or subtract fraction they must be over common denominators (the lower part of the fraction).

We can make the fraction on the right have a common denominator with the fraction on the left by multiplying by the appropriate form of #1#:

#15/9 - 2/3 =>#

#15/9 - (color(red)(3/3) xx 2/3) =>#

#15/9 - 6/9#

Now, we can subtract the numerators (the top part of the fraction) over the common denominator:

#15/9 - 6/9 =>#

#(15 - 6)/9 =>#

#9/9 =>#

#1#