Question

what is the answer of this question 3(x+9)=81.​

Answer 1

Step-by-step explanation:

Simplifying

3x + -9 = 81

Reorder the terms:

-9 + 3x = 81

Solving

-9 + 3x = 81

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '9' to each side of the equation.

-9 + 9 + 3x = 81 + 9

Combine like terms: -9 + 9 = 0

0 + 3x = 81 + 9

3x = 81 + 9

Combine like terms: 81 + 9 = 90

3x = 90

Divide each side by '3'.

x = 30

Simplifying

x = 30

#hope it helps

Answer 2

Answer:

$\fbox{\blue{x = 18}}$