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What is the solution to this equation?

5x + 9 - 3x = 18 + 15

A. x = 8

B. x = 21

C. x = 3

D. x = 12

ANSWER: D (x = 12)


What Is The Solution To This Equation 5x 9 3x 18 15 A X 8 B X 21 C X 3 D X 12 ANSWER D X 12 class=

Sagot :

Answer:

x = 12

Step-by-step explanation:

5x + 9 - 3x = 18 + 15

2x + 9 = 33

2x (+ 9 - 9) = 33 - 9

2x/2 = 24/2

x = 12

[tex] \huge\boxed{\mathfrak{Question} \downarrow}[/tex]

What is the solution to this equation?

  • 5x + 9 - 3x = 18 + 15

[tex] \large \boxed{\mathfrak{Answer \: with \: Explanation} \downarrow}[/tex]

[tex] \sf5 x + 9 - 3 x = 18 + 15[/tex]

Combine 5x and -3x to get 2x.

[tex] \sf2x+9=18+15 [/tex]

Add 18 and 15 to get 33.

[tex] \sf2x+9=33 [/tex]

Subtract 9 from both sides.

[tex] \sf2x=33-9 [/tex]

Subtract 9 from 33 to get 24.

[tex] \sf2x=24 [/tex]

Divide both sides by 2.

[tex] \sf \: x=\frac{24}{2} \\ [/tex]

Divide 24 by 2 to get 12.

[tex] \boxed{ \boxed{ \bf \: x=12 }}[/tex]

  • The value of x is 12. Yes, the option you clicked is correct. D. x = 12 (✓)