# Online Algebra Tutoring:Â Complex Numbers (Addition and Subtraction)

**Math**Â is an essential skill in our everyday life! The expert math tutors at eTutorWorld tailor tutoring methods individually to each student. WithÂ eTutorWorld expertÂ andÂ experienced Math tutors, students learnÂ **math**** topicsÂ **gradually and effortlessly. Each tutoring session is taught using state-of-the-art technology, a student centric approach, individualized teaching and assessments. Be itÂ **Real Numbers**Â orÂ **Rational Numbers, Constructions or Measurement, Triangles**Â or**Â Quadrilaterals, Scatter plots**Â or theÂ **stem-and-leaf plot**Â students are able to grasp these concepts quickly with the help of a sharedÂ **whiteboard**Â andÂ **audio conferencing**Â during theÂ **live tutoring**** session.**

Grab the eTutorWorld advantage and help her to not only master these valuable skills but also have the confidence required to succeed in grade school and beyond. Let your child learn from our highly experienced math tutors for all grades 3 to 12.

### 1.Addition:

p+qi and r+ti are two complex numbers.

To add these two complex numbers we add the real parts and imaginary parts of both the numbers separately.

(p+qi) + (r+ti ) = (p+r ) + (q+t)i

Example: (3+4i ) +(2+5i )

= (3+2) + (4+5)i

=(5+9i )

### 2.Subtraction

p+qi and r+ti are two complex numbers.

To subtract these two numbers, we will subtract the real part of second number from the real part of the first number and imaginary part from imaginary part.

(p+qi ) – (r+ti ) = (p-r ) + (q-t)i

Example: (5+3i) – (4+i)

= (5-4) + (3-1)i

### Check point

**1.) ( -13 + 4i) + ( 7 + 4i)**

**2.) (-15 + 7i) â€“ (2 + 3i)**

**3.) (-7 + 3i) + (- 2 + 5i)**

**4.) 4 – (3 + 2i)**

**5.) (2 – 3i) + (4 + 7i)**

### Download Free Printable Worksheets for Algebra

**Itâ€™s really magical! No credit card is required, nor are you under any obligation to make a purchase. Just schedule the FREE TRIAL**** lesson**** to meet a tutor and get help on any topic you want! Get access to hundreds of math practice worksheets!**

**People have also searched for:**