218=5a+8(1-5a)

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Solution for 218=5a+8(1-5a) equation:


Simplifying
218 = 5a + 8(1 + -5a)
218 = 5a + (1 * 8 + -5a * 8)
218 = 5a + (8 + -40a)

Reorder the terms:
218 = 8 + 5a + -40a

Combine like terms: 5a + -40a = -35a
218 = 8 + -35a

Solving
218 = 8 + -35a

Solving for variable 'a'.

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

Add '35a' to each side of the equation.
218 + 35a = 8 + -35a + 35a

Combine like terms: -35a + 35a = 0
218 + 35a = 8 + 0
218 + 35a = 8

Add '-218' to each side of the equation.
218 + -218 + 35a = 8 + -218

Combine like terms: 218 + -218 = 0
0 + 35a = 8 + -218
35a = 8 + -218

Combine like terms: 8 + -218 = -210
35a = -210

Divide each side by '35'.
a = -6

Simplifying
a = -6

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