mavii

2 + 64 = 66\). (The addition part of the expression has to be worked out last following BIDMAS.) Substitution into formulae works the same way as substitution into expressions, and it is important ...

2 + 64 = 66\). The addition part of the expression has to be worked out last following BIDMAS. This is the final answer. Substitution into formulae works the same way as substitution into ...