3a+4+9a-2+8a+7=

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Solution for 3a+4+9a-2+8a+7= equation:


Simplifying
3a + 4 + 9a + -2 + 8a + 7 = 0

Reorder the terms:
4 + -2 + 7 + 3a + 9a + 8a = 0

Combine like terms: 4 + -2 = 2
2 + 7 + 3a + 9a + 8a = 0

Combine like terms: 2 + 7 = 9
9 + 3a + 9a + 8a = 0

Combine like terms: 3a + 9a = 12a
9 + 12a + 8a = 0

Combine like terms: 12a + 8a = 20a
9 + 20a = 0

Solving
9 + 20a = 0

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 + 20a = 0 + -9

Combine like terms: 9 + -9 = 0
0 + 20a = 0 + -9
20a = 0 + -9

Combine like terms: 0 + -9 = -9
20a = -9

Divide each side by '20'.
a = -0.45

Simplifying
a = -0.45

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