78=66(-6a-5)

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Solution for 78=66(-6a-5) equation:


Simplifying
78 = 66(-6a + -5)

Reorder the terms:
78 = 66(-5 + -6a)
78 = (-5 * 66 + -6a * 66)
78 = (-330 + -396a)

Solving
78 = -330 + -396a

Solving for variable 'a'.

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

Add '396a' to each side of the equation.
78 + 396a = -330 + -396a + 396a

Combine like terms: -396a + 396a = 0
78 + 396a = -330 + 0
78 + 396a = -330

Add '-78' to each side of the equation.
78 + -78 + 396a = -330 + -78

Combine like terms: 78 + -78 = 0
0 + 396a = -330 + -78
396a = -330 + -78

Combine like terms: -330 + -78 = -408
396a = -408

Divide each side by '396'.
a = -1.03030303

Simplifying
a = -1.03030303

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