21*7x(5+4)=

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Solution for 21*7x(5+4)= equation: 


Simplifying
21 * 7x(5 + 4) = 0

Combine like terms: 5 + 4 = 9
21 * 7x(9) = 0

Reorder the terms for easier multiplication:
21 * 7 * 9x = 0

Multiply 21 * 7
147 * 9x = 0

Multiply 147 * 9
1323x = 0

Solving
1323x = 0

Solving for variable 'x'.

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

Divide each side by '1323'.
x = 0

Simplifying
x = 0

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