Solutions to Practice #1
For each collection of symbols below, determine if it is an
algebraic term, expression, equation, or none of these. Explain
your answer.
- 7 ÷ x
None of these — It is not clear what ÷ means
between 7 and x.
- a + b – c
Expression — It is an expression since it means to
add b to a and to subtract c from that sum.
- 24 = 3a + 9b
Equation — Here we have two expressions set equal
to one another. Note that one of those expressions is an integer.
- 3x
Term — This is a product of a constant and variable.
- 24x2y + 5z = 12ac
Equation — Here we have two expressions set equal
to one another. One of those expressions is a single term, 12ac.
- –156xwz
Term — This is the product of a number, –156,
and several variables, x, w, and z.
NOTE:
The practices in this unit do not have detailed solutions. If
you got each item on this practice correct, move on to the next
unit. If you had any problems with this practice, reread the unit
and try the additional practice, Practice #2, for this unit.
