10(a+3)=9[a-(1-a)]

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Solution for 10(a+3)=9[a-(1-a)] equation:


Simplifying
10(a + 3) = 9[a + -1(1 + -1a)]

Reorder the terms:
10(3 + a) = 9[a + -1(1 + -1a)]
(3 * 10 + a * 10) = 9[a + -1(1 + -1a)]
(30 + 10a) = 9[a + -1(1 + -1a)]
30 + 10a = 9[a + (1 * -1 + -1a * -1)]
30 + 10a = 9[a + (-1 + 1a)]

Reorder the terms:
30 + 10a = 9[-1 + a + 1a]

Combine like terms: a + 1a = 2a
30 + 10a = 9[-1 + 2a]
30 + 10a = [-1 * 9 + 2a * 9]
30 + 10a = [-9 + 18a]

Solving
30 + 10a = -9 + 18a

Solving for variable 'a'.

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

Add '-18a' to each side of the equation.
30 + 10a + -18a = -9 + 18a + -18a

Combine like terms: 10a + -18a = -8a
30 + -8a = -9 + 18a + -18a

Combine like terms: 18a + -18a = 0
30 + -8a = -9 + 0
30 + -8a = -9

Add '-30' to each side of the equation.
30 + -30 + -8a = -9 + -30

Combine like terms: 30 + -30 = 0
0 + -8a = -9 + -30
-8a = -9 + -30

Combine like terms: -9 + -30 = -39
-8a = -39

Divide each side by '-8'.
a = 4.875

Simplifying
a = 4.875

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