21(2-x)+14x=42

Solution for 21(2-x)+14x=42 equation:

Simplifying
21(2 + -1x) + 14x = 42
(2 * 21 + -1x * 21) + 14x = 42
(42 + -21x) + 14x = 42

Combine like terms: -21x + 14x = -7x
42 + -7x = 42

Add '-42' to each side of the equation.
42 + -42 + -7x = 42 + -42

Combine like terms: 42 + -42 = 0
0 + -7x = 42 + -42
-7x = 42 + -42

Combine like terms: 42 + -42 = 0
-7x = 0

Solving
-7x = 0

Solving for variable 'x'.

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

Divide each side by '-7'.
x = 0

Simplifying
x = 0