Question

sue has collected 30 rocks for science class jared has collected 23 fewer rocks. how many rocks has jared collected?
sue
30 - 23 = r
\tr + 23 = 30
\t\t30 - r = 23
\tr =
jared has collected rocks for science class.

Explanation:

Step1: Define variable for Jared's rocks

Let $r$ = number of rocks Jared collected.

Step2: Set up subtraction equation

$r = 30 - 23$

Step3: Calculate the result

$r = 7$

Answer:

$r=7$
Jared has collected 7 rocks for science class.