7(3+x)=9

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Solution for 7(3+x)=9 equation: 


Simplifying
7(3 + x) = 9
(3 * 7 + x * 7) = 9
(21 + 7x) = 9

Solving
21 + 7x = 9

Solving for variable 'x'.

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

Add '-21' to each side of the equation.
21 + -21 + 7x = 9 + -21

Combine like terms: 21 + -21 = 0
0 + 7x = 9 + -21
7x = 9 + -21

Combine like terms: 9 + -21 = -12
7x = -12

Divide each side by '7'.
x = -1.714285714

Simplifying
x = -1.714285714

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