9+4=9-9(a+4)+3x

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Solution for 9+4=9-9(a+4)+3x equation:


Simplifying
9 + 4 = 9 + -9(a + 4) + 3x

Combine like terms: 9 + 4 = 13
13 = 9 + -9(a + 4) + 3x

Reorder the terms:
13 = 9 + -9(4 + a) + 3x
13 = 9 + (4 * -9 + a * -9) + 3x
13 = 9 + (-36 + -9a) + 3x

Combine like terms: 9 + -36 = -27
13 = -27 + -9a + 3x

Solving
13 = -27 + -9a + 3x

Solving for variable 'a'.

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

Add '9a' to each side of the equation.
13 + 9a = -27 + -9a + 9a + 3x

Combine like terms: -9a + 9a = 0
13 + 9a = -27 + 0 + 3x
13 + 9a = -27 + 3x

Add '-13' to each side of the equation.
13 + -13 + 9a = -27 + -13 + 3x

Combine like terms: 13 + -13 = 0
0 + 9a = -27 + -13 + 3x
9a = -27 + -13 + 3x

Combine like terms: -27 + -13 = -40
9a = -40 + 3x

Divide each side by '9'.
a = -4.444444444 + 0.3333333333x

Simplifying
a = -4.444444444 + 0.3333333333x

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