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Mathematics 8 Online
OpenStudy (anonymous):

9/10+2/5-1/4

OpenStudy (anonymous):

set all the denominators to be the same :D

OpenStudy (anonymous):

\[\frac{ 18 }{ 20 }+\frac{ 8 }{ 20 }=\frac{ 26 }{ 20 }-\frac{ 5 }{ 20 }=\frac{ 21 }{ 20 } or 1 \frac{ 1 }{ 20 }\]

OpenStudy (anonymous):

very good!

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