[3a-9]+10=28

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Solution for [3a-9]+10=28 equation:


Simplifying
[3a + -9] + 10 = 28

Reorder the terms:
[-9 + 3a] + 10 = 28

Remove brackets around [-9 + 3a]
-9 + 3a + 10 = 28

Reorder the terms:
-9 + 10 + 3a = 28

Combine like terms: -9 + 10 = 1
1 + 3a = 28

Solving
1 + 3a = 28

Solving for variable 'a'.

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

Add '-1' to each side of the equation.
1 + -1 + 3a = 28 + -1

Combine like terms: 1 + -1 = 0
0 + 3a = 28 + -1
3a = 28 + -1

Combine like terms: 28 + -1 = 27
3a = 27

Divide each side by '3'.
a = 9

Simplifying
a = 9

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