Video Transcript
Given that Daniel is seven 𝑐 years old now, write an expression for his age five
years ago.
If Daniel’s age is seven 𝑐, then his age five years ago will be five less than seven
𝑐. Thus, we need to subtract five from seven 𝑐. We recall that the order of operations, often denoted by the acronym PEMDAS, tells us
that multiplication comes before subtraction. We can therefore subtract five from the expression directly and can conclude that
Daniel’s age five years ago is given by the expression seven 𝑐 minus five.
