7(9+x)=42

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Solution for 7(9+x)=42 equation: 


Simplifying
7(9 + x) = 42
(9 * 7 + x * 7) = 42
(63 + 7x) = 42

Solving
63 + 7x = 42

Solving for variable 'x'.

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

Add '-63' to each side of the equation.
63 + -63 + 7x = 42 + -63

Combine like terms: 63 + -63 = 0
0 + 7x = 42 + -63
7x = 42 + -63

Combine like terms: 42 + -63 = -21
7x = -21

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

Simplifying
x = -3

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