10a+11+(-15)+90=

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Solution for 10a+11+(-15)+90= equation:


Simplifying
10a + 11 + (-15) + 90 = 0
10a + 11 + -15 + 90 = 0

Reorder the terms:
11 + -15 + 90 + 10a = 0

Combine like terms: 11 + -15 = -4
-4 + 90 + 10a = 0

Combine like terms: -4 + 90 = 86
86 + 10a = 0

Solving
86 + 10a = 0

Solving for variable 'a'.

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

Add '-86' to each side of the equation.
86 + -86 + 10a = 0 + -86

Combine like terms: 86 + -86 = 0
0 + 10a = 0 + -86
10a = 0 + -86

Combine like terms: 0 + -86 = -86
10a = -86

Divide each side by '10'.
a = -8.6

Simplifying
a = -8.6

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