Can I write:(a) Two plus two equals four. Yes(b) Two plus two is equal to four. Yes(c) Two plus two equals to four.No.More common, I think is 'Two and two is four'.You can also say 'Two and two are four'.Clive
(a) Take away three from twenty-eight equals twenty-five.(b) Take away three from twenty-eight is equal to twenty-five. 'Is' is more common than 'equals' in this kind of sentence.Here are common ways to say the above.28, take away 3, is 25.28 less 3 is 25.3 subtracted from 28 is 25.Clive