-7(9-3x)=0

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Solution for -7(9-3x)=0 equation: 


Simplifying
-7(9 + -3x) = 0
(9 * -7 + -3x * -7) = 0
(-63 + 21x) = 0

Solving
-63 + 21x = 0

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 + 21x = 0 + 63

Combine like terms: -63 + 63 = 0
0 + 21x = 0 + 63
21x = 0 + 63

Combine like terms: 0 + 63 = 63
21x = 63

Divide each side by '21'.
x = 3

Simplifying
x = 3

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