21(5+3x)=

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Solution for 21(5+3x)= equation: 


Simplifying
21(5 + 3x) = 0
(5 * 21 + 3x * 21) = 0
(105 + 63x) = 0

Solving
105 + 63x = 0

Solving for variable 'x'.

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

Add '-105' to each side of the equation.
105 + -105 + 63x = 0 + -105

Combine like terms: 105 + -105 = 0
0 + 63x = 0 + -105
63x = 0 + -105

Combine like terms: 0 + -105 = -105
63x = -105

Divide each side by '63'.
x = -1.666666667

Simplifying
x = -1.666666667

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