Question

Brianna is very good at keeping her school binder organized. Every time her teacher returns an assignment, Brianna puts it in the right section. Brianna has 113 assignments in the history, science, and art sections combined. The rest of her assignments are in the math section. Brianna has 182 assignments in total.
Use an equation to find the number of assignments in the math section of Brianna's binder.

Answer 1

Any idea what to start with?

Answer 2

this didn't give me any answer choices

Answer 3

You need to set an equation:
a + b = c, where a and c are given and you need to find b

Answer 4

Can you do that?

Answer 5

Substitute a with the number of assignments in the history, science, and art sections.
Substitute c with total number.
Substitute b with m, to show this is number of math assignments.

Answer 6

No can you?

Answer 7

Is there a ss for this?