2(a+9)=10[a-(8-a)]

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Solution for 2(a+9)=10[a-(8-a)] equation:


Simplifying
2(a + 9) = 10[a + -1(8 + -1a)]

Reorder the terms:
2(9 + a) = 10[a + -1(8 + -1a)]
(9 * 2 + a * 2) = 10[a + -1(8 + -1a)]
(18 + 2a) = 10[a + -1(8 + -1a)]
18 + 2a = 10[a + (8 * -1 + -1a * -1)]
18 + 2a = 10[a + (-8 + 1a)]

Reorder the terms:
18 + 2a = 10[-8 + a + 1a]

Combine like terms: a + 1a = 2a
18 + 2a = 10[-8 + 2a]
18 + 2a = [-8 * 10 + 2a * 10]
18 + 2a = [-80 + 20a]

Solving
18 + 2a = -80 + 20a

Solving for variable 'a'.

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

Add '-20a' to each side of the equation.
18 + 2a + -20a = -80 + 20a + -20a

Combine like terms: 2a + -20a = -18a
18 + -18a = -80 + 20a + -20a

Combine like terms: 20a + -20a = 0
18 + -18a = -80 + 0
18 + -18a = -80

Add '-18' to each side of the equation.
18 + -18 + -18a = -80 + -18

Combine like terms: 18 + -18 = 0
0 + -18a = -80 + -18
-18a = -80 + -18

Combine like terms: -80 + -18 = -98
-18a = -98

Divide each side by '-18'.
a = 5.444444444

Simplifying
a = 5.444444444

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