Question

Liz collects 12 ladybugs for a science project. This is 9 fewer than the number of ladybugs Liz collected yesterday. Write an equation to find the number of ladybugs Liz collected yesterday.

A) x−12=9
B) x+9=12
C) 12−x=9
D) x+12=9

Answer 1

To find the number of ladybugs Liz collected yesterday, an equation can be written as x + 9 = 12 where x represents yesterday's quantity.

Step-by-step explanation:

The question asks us to write an equation to find the number of ladybugs Liz collected yesterday based on the information that today she collected 12, which is 9 fewer than yesterday. To form the equation, let's use the variable x to represent the number of ladybugs collected yesterday.

Since today she collected 9 fewer, we add 9 to today's amount to find the total from yesterday. Therefore, the equation is x = 12 + 9.

The correct equation showing that today's number of ladybugs plus 9 equals yesterday's collection is:

B) x + 9 = 12