400=42(x+42)

Solution for 400=42(x+42) equation:

Simplifying
400 = 42(x + 42)

Reorder the terms:
400 = 42(42 + x)
400 = (42 * 42 + x * 42)
400 = (1764 + 42x)

Solving
400 = 1764 + 42x

Solving for variable 'x'.

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

Add '-42x' to each side of the equation.
400 + -42x = 1764 + 42x + -42x

Combine like terms: 42x + -42x = 0
400 + -42x = 1764 + 0
400 + -42x = 1764

Add '-400' to each side of the equation.
400 + -400 + -42x = 1764 + -400

Combine like terms: 400 + -400 = 0
0 + -42x = 1764 + -400
-42x = 1764 + -400

Combine like terms: 1764 + -400 = 1364
-42x = 1364

Divide each side by '-42'.
x = -32.47619048

Simplifying
x = -32.47619048