Question

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

Answer 1

Answer:

B. Apply the distributive property to get 4x-12=9

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

Step-by-step explanation:

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

Use the distributive property.

Distributive property:

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

4(x-3)=9

Expand the form multiply.

4*x=4x

4*3=12

Rewrite the problem down.

4x-12=9

Add by 12 from both sides.

4x-12+12=9+12

Solve.

Add the numbers from left to right.

9+12=21

4x=21

Divide by 4 from both sides.

4x/4=21/4

Solve.

Divide the numbers from left to right.

x=21/4

21/4=5.25

x=21/4=5.25

• Therefore, the final answer is x=21/4=5.25.

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