Question

Find the sum of the following algebraic expressions :
4. 8a - 3b + 11c, 5b - 6a + 7c and 9c + 2a - 86.​

Answer 1

Answer:

Step-by-step explanation:

The sum of the algebraic expressions is 4a - 6b + 27c

Given expressions are

                      8a - 3b + 11c

                      5b - 6a + 7c

                      9c + 2a - 8b

Sum of expressions

            = (8a - 3b + 11c) + (5b - 6a + 7c) + (9c + 2a - 8b)

            = (8a - 6a + 2a) + (- 3b + 5b - 8b) + (11c + 7c + 9c)

                                      [∵ grouping like terms]

            = (10a - 6a) + (5b - 11b) + (18c + 9c)

            = 4a - 6b + 27c