4a-(a+9)=6

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Solution for 4a-(a+9)=6 equation:


Simplifying
4a + -1(a + 9) = 6

Reorder the terms:
4a + -1(9 + a) = 6
4a + (9 * -1 + a * -1) = 6
4a + (-9 + -1a) = 6

Reorder the terms:
-9 + 4a + -1a = 6

Combine like terms: 4a + -1a = 3a
-9 + 3a = 6

Solving
-9 + 3a = 6

Solving for variable 'a'.

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

Add '9' to each side of the equation.
-9 + 9 + 3a = 6 + 9

Combine like terms: -9 + 9 = 0
0 + 3a = 6 + 9
3a = 6 + 9

Combine like terms: 6 + 9 = 15
3a = 15

Divide each side by '3'.
a = 5

Simplifying
a = 5

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