3+7=x

Solution for 3+7=x equation:

Simplifying
3 + 7 = x

Combine like terms: 3 + 7 = 10
10 = x

Solving
10 = 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.
10 + -1x = x + -1x

Combine like terms: x + -1x = 0
10 + -1x = 0

Add '-10' to each side of the equation.
10 + -10 + -1x = 0 + -10

Combine like terms: 10 + -10 = 0
0 + -1x = 0 + -10
-1x = 0 + -10

Combine like terms: 0 + -10 = -10
-1x = -10

Divide each side by '-1'.
x = 10

Simplifying
x = 10