3x*(7*x)=

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Solution for 3x*(7*x)= equation: 


Simplifying
3x(7x) = 0

Remove parenthesis around (7x)
3x * 7x = 0

Reorder the terms for easier multiplication:
3 * 7x * x = 0

Multiply 3 * 7
21x * x = 0

Multiply x * x
21x2 = 0

Solving
21x2 = 0

Solving for variable 'x'.

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

Divide each side by '21'.
x2 = 0

Simplifying
x2 = 0

Take the square root of each side:
x = {0}

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