-10a+9+20b=30+n

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Solution for -10a+9+20b=30+n equation:


Simplifying
-10a + 9 + 20b = 30 + n

Reorder the terms:
9 + -10a + 20b = 30 + n

Solving
9 + -10a + 20b = 30 + n

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 + -10a + -9 + 20b = 30 + -9 + n

Reorder the terms:
9 + -9 + -10a + 20b = 30 + -9 + n

Combine like terms: 9 + -9 = 0
0 + -10a + 20b = 30 + -9 + n
-10a + 20b = 30 + -9 + n

Combine like terms: 30 + -9 = 21
-10a + 20b = 21 + n

Add '-20b' to each side of the equation.
-10a + 20b + -20b = 21 + -20b + n

Combine like terms: 20b + -20b = 0
-10a + 0 = 21 + -20b + n
-10a = 21 + -20b + n

Divide each side by '-10'.
a = -2.1 + 2b + -0.1n

Simplifying
a = -2.1 + 2b + -0.1n

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