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Step-3

Title: Sum of two expressions

Grade: 6-a Lesson: S3-L5

Explanation: Hello Students, time to practice and review the steps for the problem.

Lesson Steps

Step	Type	Explanation	Answer
1	Problem	Find the sum	(2 x + 5 y) + (-x - y)
2	Formula:	After eleminating the brackets we get	2 x + 5 y - x - y
3	Step	Grouping like terms together	(2 x - x) + (5 y - y)
4	Step	After adding we get	x + 4y
5		Answer	A

Step

Type

Explanation

Answer

Problem

Find the sum

(2 x + 5 y) + (-x - y)

Formula:

After eleminating the brackets we get

2 x + 5 y - x - y

Step

Grouping like terms together

(2 x - x) + (5 y - y)

Step

After adding we get

x + 4y

Answer