42=7(2*x)

Solution for 42=7(2*x) equation:

Simplifying
42 = 7(2x)

Remove parenthesis around (2x)
42 = 7 * 2x

Multiply 7 * 2
42 = 14x

Solving
42 = 14x

Solving for variable 'x'.

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

Add '-14x' to each side of the equation.
42 + -14x = 14x + -14x

Combine like terms: 14x + -14x = 0
42 + -14x = 0

Add '-42' to each side of the equation.
42 + -42 + -14x = 0 + -42

Combine like terms: 42 + -42 = 0
0 + -14x = 0 + -42
-14x = 0 + -42

Combine like terms: 0 + -42 = -42
-14x = -42

Divide each side by '-14'.
x = 3

Simplifying
x = 3