3 years ago

Add the two expressions. 3x + 7 and 9x−2

Mathematics

2 answers:

dexar [7]3 years ago

4 0

Answer:

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

aleksklad [387]3 years ago

3 0

Let's add

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

Remove brackets

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

Combine like variables

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

$\\ \tt\hookrightarrow 12x+5$

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