Question

slove the equation: 3x + 9 = 42
..​

Answer 1

Answer:

3x+9=42

3x=9-42

3x=33

X=33/3

x=11

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Answer 2

Solution:-

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⇢ Here we are given an equation that is 3x + 9 = 42. Now, the question has asked us to solve the equation and find the value of x after that we have to verify the answer also. So, for solving the equation follow the method given below.

ANSWER:-

⟹ Value of x is 11.

GIVEN:-

➮ Equation = 3x + 9 = 42

TO FIND:-

⇒ Value of x = ?

HOW TO DO:-

⇨ Take constant terms to R.H.S.

⇨ Separate the constant terms from the variable.

⇨ Take the separated term to R.H.S.

⇨ Solve further.

SOLVING STEP BY STEP:-

⇾ 3x + 9 = 42

⇾ Transposing 9 to R.H.S (Sign will change):- 42 - 9

So,

⇾ 3x = 42 - 9

⇾ Subtracting the terms:- 42 - 9 = 33

So,

⇾ 3x = 33

⇾ Transposing 3 to R.H.S:- 33 / 3

So,

⇾ x = 33 / 3

⇾ Dividing the terms:- 33 / 3 = 11

So,

⇾ x = 11

⇾ Final answer:- 11

So,

⇾ x = 11

Thus, we got the answer. Value of x is 10.5.

VERIFICATION:-

• Value of x is 33

» 3 × 11 + 9 (Solving by BODMAS)

» 3 × 11 = 33

» 33 + 9

» 33 + 9 = 42

» 42

∴ L.H.S = R.H.S

∴ Hence, Verified.

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