Question

Add the two expressions.

3x + 7 and 9x−2

Answer 1

• 12x + 5

Step-by-step Solution:

• (3x + 7) + (9x − 2)

[Opening the brackets]

• => 3x + 7 + 9x - 2

[Combining Like terms]

• => (3x + 9x) + (7 - 2)

[Simplifying]

• => 12x + 5

Answer 2

Let's add

`\\ \tt\hookrightarrow 3x+7+(9x-2)`

• Remove brackets

`\\ \tt\hookrightarrow 3x+7+9x-2`

Combine like variables

`\\ \tt\hookrightarrow 3x+9x+7-2`

`\\ \tt\hookrightarrow 12x+5`