Cole spent some time working on his history homework. Then he spent 5/12 hour working on his Spanish homework. Cole spent 1 hour on homework. What fraction of an hour did cole spend on history? Explain

we can write one hour like this:
[tex]1=\frac{12}{12}[/tex]then, substrating 5/12, we get:
[tex]\frac{12}{12}-\frac{5}{12}=\frac{12-5}{12}=\frac{7}{12}[/tex]therefore, the answer is 7/12 hour, because 12/12 - 5/12 = 7/12