5x+3(-3x+9)=-21

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Solution for 5x+3(-3x+9)=-21 equation:


Simplifying
5x + 3(-3x + 9) = -21

Reorder the terms:
5x + 3(9 + -3x) = -21
5x + (9 * 3 + -3x * 3) = -21
5x + (27 + -9x) = -21

Reorder the terms:
27 + 5x + -9x = -21

Combine like terms: 5x + -9x = -4x
27 + -4x = -21

Solving
27 + -4x = -21

Solving for variable 'x'.

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

Add '-27' to each side of the equation.
27 + -27 + -4x = -21 + -27

Combine like terms: 27 + -27 = 0
0 + -4x = -21 + -27
-4x = -21 + -27

Combine like terms: -21 + -27 = -48
-4x = -48

Divide each side by '-4'.
x = 12

Simplifying
x = 12

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