7a+15+6=0

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Solution for 7a+15+6=0 equation:


Simplifying
7a + 15 + 6 = 0

Reorder the terms:
15 + 6 + 7a = 0

Combine like terms: 15 + 6 = 21
21 + 7a = 0

Solving
21 + 7a = 0

Solving for variable 'a'.

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

Add '-21' to each side of the equation.
21 + -21 + 7a = 0 + -21

Combine like terms: 21 + -21 = 0
0 + 7a = 0 + -21
7a = 0 + -21

Combine like terms: 0 + -21 = -21
7a = -21

Divide each side by '7'.
a = -3

Simplifying
a = -3

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