3a-9=2(a+1)+15a+4

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Solution for 3a-9=2(a+1)+15a+4 equation:


Simplifying
3a + -9 = 2(a + 1) + 15a + 4

Reorder the terms:
-9 + 3a = 2(a + 1) + 15a + 4

Reorder the terms:
-9 + 3a = 2(1 + a) + 15a + 4
-9 + 3a = (1 * 2 + a * 2) + 15a + 4
-9 + 3a = (2 + 2a) + 15a + 4

Reorder the terms:
-9 + 3a = 2 + 4 + 2a + 15a

Combine like terms: 2 + 4 = 6
-9 + 3a = 6 + 2a + 15a

Combine like terms: 2a + 15a = 17a
-9 + 3a = 6 + 17a

Solving
-9 + 3a = 6 + 17a

Solving for variable 'a'.

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

Add '-17a' to each side of the equation.
-9 + 3a + -17a = 6 + 17a + -17a

Combine like terms: 3a + -17a = -14a
-9 + -14a = 6 + 17a + -17a

Combine like terms: 17a + -17a = 0
-9 + -14a = 6 + 0
-9 + -14a = 6

Add '9' to each side of the equation.
-9 + 9 + -14a = 6 + 9

Combine like terms: -9 + 9 = 0
0 + -14a = 6 + 9
-14a = 6 + 9

Combine like terms: 6 + 9 = 15
-14a = 15

Divide each side by '-14'.
a = -1.071428571

Simplifying
a = -1.071428571

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