Question

Match the following:

• A. $2x+5y$
• B. $11x$
• C. $12Apples$
• D. $2Kiwis+4Camels$

Answer 1

$\underset{–}{Concept}$

Different terms for the same things (unknowns) can be merged, but terms for different things (unknowns) cannot.

Since both terms of the expression represents same thing(apples), when you add $5apples$ and $7apples$ together, you get $12apples$.

Since kiwis and camels are two distinct things, they cannot be combined.

Since $3x$ and $8x$ represent different numbers of the same thing, they can be combined.

Since $2x$ and $5y$ represent different numbers of different things, they can not be combined.