3+42x=21x

Solution for 3+42x=21x equation:

Simplifying
3 + 42x = 21x

Solving
3 + 42x = 21x

Solving for variable 'x'.

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

Add '-21x' to each side of the equation.
3 + 42x + -21x = 21x + -21x

Combine like terms: 42x + -21x = 21x
3 + 21x = 21x + -21x

Combine like terms: 21x + -21x = 0
3 + 21x = 0

Add '-3' to each side of the equation.
3 + -3 + 21x = 0 + -3

Combine like terms: 3 + -3 = 0
0 + 21x = 0 + -3
21x = 0 + -3

Combine like terms: 0 + -3 = -3
21x = -3

Divide each side by '21'.
x = -0.1428571429

Simplifying
x = -0.1428571429