6+3=x-3

Solution for 6+3=x-3 equation:

Simplifying
6 + 3 = x + -3

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

Reorder the terms:
9 = -3 + x

Solving
9 = -3 + x

Solving for variable 'x'.

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

Add '-1x' to each side of the equation.
9 + -1x = -3 + x + -1x

Combine like terms: x + -1x = 0
9 + -1x = -3 + 0
9 + -1x = -3

Add '-9' to each side of the equation.
9 + -9 + -1x = -3 + -9

Combine like terms: 9 + -9 = 0
0 + -1x = -3 + -9
-1x = -3 + -9

Combine like terms: -3 + -9 = -12
-1x = -12

Divide each side by '-1'.
x = 12

Simplifying
x = 12