Math  /  Algebra

Question23. 3(x+7)=3(x+7)=

Studdy Solution

STEP 1

What is this asking? We need to simplify the expression 3(x+7)3(x+7) using the distributive property. Watch out! Don't forget to multiply the 3 by *both* terms inside the parentheses!

STEP 2

1. Distribute the 3

STEP 3

We're starting with 3(x+7)3(x+7).
Remember, this means we're multiplying 3 by the *entire* quantity (x+7)(x+7).

STEP 4

The **distributive property** says that a(b+c)=ab+aca(b+c) = a \cdot b + a \cdot c.
So, we'll multiply the **outside number**, 3, by *each* term inside the parentheses.
Let's do it!

STEP 5

First, we multiply 3 by xx, which gives us 3x=3x3 \cdot x = 3x.
Remember, 3x3x just means 3 times xx.

STEP 6

Next, we multiply 3 by the **second term** inside the parentheses, which is 7.
This gives us 37=213 \cdot 7 = 21.

STEP 7

Now, we add the results from the previous two sub-steps together.
We have 3x3x and 21, so we get 3x+213x + 21.

STEP 8

3(x+7)=3x+213(x+7) = 3x + 21

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