Solve 25-(-5)+(-6)-4: Mixed Operations with Negative Numbers

Question

Solve the following problem:

$25-(-5)+(-6)-4=$

00:00 Solve

00:03 Negative times negative is always positive

00:07 Open parentheses

00:18 Calculate one operation at a time from left to right

00:26 Positive times negative is always negative

00:41 And this is the solution to the question

Let's remember the rule:

$-(-x)=+x$

Let's write the exercise in the appropriate form:

$25+5+(-6)-4=$

Let's solve the exercise from left to right:

$25+5=30$

We obtain the following exercise:

$30+(-6)-4=$

Let's remember the rule:

$+(-x)=-x$

Let's write the exercise in the appropriate form:

$30-6-4=$

Let's solve the exercise from left to right:

$30-6=24$

$24-4=20$

$20$