(7x)(3x)=525

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Solution for (7x)(3x)=525 equation: 


Simplifying
(7x)(3x) = 525

Remove parenthesis around (7x)
7x(3x) = 525

Remove parenthesis around (3x)
7x * 3x = 525

Reorder the terms for easier multiplication:
7 * 3x * x = 525

Multiply 7 * 3
21x * x = 525

Multiply x * x
21x2 = 525

Solving
21x2 = 525

Solving for variable 'x'.

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

Divide each side by '21'.
x2 = 25

Simplifying
x2 = 25

Take the square root of each side:
x = {-5, 5}

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