42=7(x+3)

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Solution for 42=7(x+3) equation:


Simplifying
42 = 7(x + 3)

Reorder the terms:
42 = 7(3 + x)
42 = (3 * 7 + x * 7)
42 = (21 + 7x)

Solving
42 = 21 + 7x

Solving for variable 'x'.

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

Add '-7x' to each side of the equation.
42 + -7x = 21 + 7x + -7x

Combine like terms: 7x + -7x = 0
42 + -7x = 21 + 0
42 + -7x = 21

Add '-42' to each side of the equation.
42 + -42 + -7x = 21 + -42

Combine like terms: 42 + -42 = 0
0 + -7x = 21 + -42
-7x = 21 + -42

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

Divide each side by '-7'.
x = 3

Simplifying
x = 3

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