13(20-a)=

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Solution for 13(20-a)= equation: 


Simplifying
13(20 + -1a) = 0
(20 * 13 + -1a * 13) = 0
(260 + -13a) = 0

Solving
260 + -13a = 0

Solving for variable 'a'.

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

Add '-260' to each side of the equation.
260 + -260 + -13a = 0 + -260

Combine like terms: 260 + -260 = 0
0 + -13a = 0 + -260
-13a = 0 + -260

Combine like terms: 0 + -260 = -260
-13a = -260

Divide each side by '-13'.
a = 20

Simplifying
a = 20

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