Addition and Subtraction of Directed Numbers: Number of terms

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

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:

$25+5=30$

Now we get the 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:

$30-6=24$

$24-4=20$

$20$

$15+5-(-4)+(-9)+8-4=$

Let's remember the rule:

$-(-x)=+x$

We'll write the exercise in the appropriate form:

$15+5+4+(-9)+8-4=$

Let's solve the exercise from left to right:

$15+5=20$

Now we'll get the exercise:

$20+4+(-9)+8-4=$

Let's solve the exercise from left to right:

$20+4=24$

Now we'll get the exercise:

$24+(-9)+8-4=$

Let's remember the rule:

$+(-x)=-x$

We'll write the exercise in the appropriate form:

$24-9+8-4=$

Let's solve the exercise from left to right:

$24-9=15$

$15+8=23$

$23-4=19$

$19$

$-27-(-7)+(-6)+2-11=$

First, we solve the multiplication exercise, that is where there is a plus or minus sign before another sign.

$-27+7-6+2-11=$

Now we solve as a common exercise from left to right:

$-27+7=-20$

$-20-6=-26$

$-26+2=-24$

$-24-11=-35$

$-35$

$7.5+(-9.5)+5+(-13.5)=\text{?}$

Let's open the parentheses and pay attention to the minus and plus signs, which change accordingly:

$+(-9.5)=-9.5$

$+(-13)=-13$

We get:

$7.5-9.5+5-13.5=$

Now let's solve the exercise from left to right:

$-2+5-13.5=$

$3-13.5=-10.5$

$-10.5$

$-30-(-2)+(-8)+5=$

$-31$

$-30+4+(-8)=$

$-34$

$(-4)+2+(-3)+(-5)=$

$-10$

$4+3+(-6)+(-9)=$

$-8$

$(-30)+(-2)+30+(-5)=$

$-7$

$(-10)+(-3)+4+(-12)=$

$-21$

$-\frac{4}{9}+5+(-2)+\frac{5}{9}=$

$\frac{28}{9}$

$-\frac{14}{7}+(-3)-\frac{1}{2}-(-\frac{1}{4})=$

$-\frac{21}{4}$

$-5+-\frac{1}{2}+10+(-\frac{3}{4})=$

$\frac{15}{4}$

$-\frac{3}{8}-(-\frac{5}{8})-(-\frac{1}{2})=$

$\frac{3}{4}$

Solve:

$-\frac{4}{16}-(-\frac{3}{8})+\frac{2}{8}+(-\frac{1}{4})=$

$\frac{1}{8}$

$-3+(-\frac{1}{2})+(\frac{3}{8})+\frac{5}{8}=$

$-\frac{5}{2}$

$-\frac{1}{2}+\frac{3}{4}+-\frac{1}{5}+(-\frac{4}{5})=$

$-\frac{3}{4}$