how to turn a -1 into -3

Mathematics · Middle School · Tue Nov 03 2020

Answered on

Given the statement:

How to turn -1 into -3

Solution:

-1 into -3 can be represented in an algebraic equation in order to fully understand the numerical expression.

Let x = missing number

We will add a number to have - 3

-1 + x = -3

transpose -1 on the other side of the equation, note that when transposing a number the sign changes. 

x = -3 + 1

x = -2

Check:

-1 + -2 = -3

-1 - 2 = -3

Final answer:

-1 can be turned into -3 by adding -2