20-10a=r

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Solution for 20-10a=r equation:


Simplifying
20 + -10a = r

Solving
20 + -10a = r

Solving for variable 'a'.

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

Add '-20' to each side of the equation.
20 + -20 + -10a = -20 + r

Combine like terms: 20 + -20 = 0
0 + -10a = -20 + r
-10a = -20 + r

Divide each side by '-10'.
a = 2 + -0.1r

Simplifying
a = 2 + -0.1r

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