10a+15=-9a+9

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Solution for 10a+15=-9a+9 equation:


Simplifying
10a + 15 = -9a + 9

Reorder the terms:
15 + 10a = -9a + 9

Reorder the terms:
15 + 10a = 9 + -9a

Solving
15 + 10a = 9 + -9a

Solving for variable 'a'.

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

Add '9a' to each side of the equation.
15 + 10a + 9a = 9 + -9a + 9a

Combine like terms: 10a + 9a = 19a
15 + 19a = 9 + -9a + 9a

Combine like terms: -9a + 9a = 0
15 + 19a = 9 + 0
15 + 19a = 9

Add '-15' to each side of the equation.
15 + -15 + 19a = 9 + -15

Combine like terms: 15 + -15 = 0
0 + 19a = 9 + -15
19a = 9 + -15

Combine like terms: 9 + -15 = -6
19a = -6

Divide each side by '19'.
a = -0.3157894737

Simplifying
a = -0.3157894737

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