Combination of Addition and Subtraction

We will discuss here about the combination of addition and subtraction.

The rules which can be used to solve the sums involving addition (+) and subtraction (-) together are:

I: First add and then subtract,

II: Solve the numbers enclosed in the brackets and then solve further.

Solved example involving addition (+) and subtraction (-) together:

1. Solve 3252 - 1802 + 2610

Solution:

               3    2    5    2

           +  2    6    1    0

               5    8    6    2

Now

                        5       8    6   2

                 -   1    8    0    2

              4    0    6    0


2. Find the solution to (7259 - 5369) + 2156

Solution:

               6                 11               15

               7              2              5              9

         -     5              3              6              9

                1              8              9              0

Now

                1                 1          

                1              8              9              0

         +     2              1              5              6

                4              0              4              6


3. Subtract 4926 from the sum of 3051 and 4257

Solution:

Sum of 3051 and 4257

                               1

                3              0              5              1

        +      4              2              5              7

                7              3              0              8


Now, subtract 4926 from 7308

                    6                 12                10

                7              3              0              8

          -     4              9              2              6

                2              3              8              2


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