Which sentence explains the correct first step in the solution of this equation?

Mathematics

1 answer:

siniylev [52]3 years ago

3 0

Answer:

<h3>B. Apply the distributive property to get 4x-12=9</h3>

$\boxed{\sf{x=\dfrac{21}{4}=5.25 }}$

Step-by-step explanation:

Isolate the term of x from one side of the equation.

Use the distributive property.

<u>Distributive property:</u>

$\Longrightarrow: \sf{A(B+C)=AB+AC}$

<u>Expand the form multiply.</u>

4*x=4x

4*3=12

<u>Rewrite the problem down.</u>

4x-12=9

<u>Add by 12 from both sides.</u>

4x-12+12=9+12

<u>Solve.</u>

<u />

<u>Add the numbers from left to right.</u>

9+12=21

4x=21

Divide by 4 from both sides.

4x/4=21/4

<u>Solve.</u>

<u>Divide the numbers from left to right.</u>

x=21/4

21/4=5.25

<u>Therefore, the final answer is x=21/4=5.25.</u>

I hope this helps you! Let me know if my answer is wrong or not.

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Step-by-step explanation:

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