Question

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

Answer 1

we can write one hour like this:

`1=(12)/(12)`

then, substrating 5/12, we get:

`(12)/(12)-(5)/(12)=(12-5)/(12)=(7)/(12)`

therefore, the answer is 7/12 hour, because 12/12 - 5/12 = 7/12