6(x+1)+3=21

Solution for 6(x+1)+3=21 equation:

Simplifying
6(x + 1) + 3 = 21

Reorder the terms:
6(1 + x) + 3 = 21
(1 * 6 + x * 6) + 3 = 21
(6 + 6x) + 3 = 21

Reorder the terms:
6 + 3 + 6x = 21

Combine like terms: 6 + 3 = 9
9 + 6x = 21

Solving
9 + 6x = 21

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 + 6x = 21 + -9

Combine like terms: 9 + -9 = 0
0 + 6x = 21 + -9
6x = 21 + -9

Combine like terms: 21 + -9 = 12
6x = 12

Divide each side by '6'.
x = 2

Simplifying
x = 2