231=8(7+5a)-5a

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Solution for 231=8(7+5a)-5a equation:


Simplifying
231 = 8(7 + 5a) + -5a
231 = (7 * 8 + 5a * 8) + -5a
231 = (56 + 40a) + -5a

Combine like terms: 40a + -5a = 35a
231 = 56 + 35a

Solving
231 = 56 + 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.
231 + -35a = 56 + 35a + -35a

Combine like terms: 35a + -35a = 0
231 + -35a = 56 + 0
231 + -35a = 56

Add '-231' to each side of the equation.
231 + -231 + -35a = 56 + -231

Combine like terms: 231 + -231 = 0
0 + -35a = 56 + -231
-35a = 56 + -231

Combine like terms: 56 + -231 = -175
-35a = -175

Divide each side by '-35'.
a = 5

Simplifying
a = 5

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