a+1=3a+9

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Solution for a+1=3a+9 equation:


Simplifying
a + 1 = 3a + 9

Reorder the terms:
1 + a = 3a + 9

Reorder the terms:
1 + a = 9 + 3a

Solving
1 + a = 9 + 3a

Solving for variable 'a'.

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

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

Combine like terms: a + -3a = -2a
1 + -2a = 9 + 3a + -3a

Combine like terms: 3a + -3a = 0
1 + -2a = 9 + 0
1 + -2a = 9

Add '-1' to each side of the equation.
1 + -1 + -2a = 9 + -1

Combine like terms: 1 + -1 = 0
0 + -2a = 9 + -1
-2a = 9 + -1

Combine like terms: 9 + -1 = 8
-2a = 8

Divide each side by '-2'.
a = -4

Simplifying
a = -4

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