a-5(a-20)=0

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Solution for a-5(a-20)=0 equation:


Simplifying
a + -5(a + -20) = 0

Reorder the terms:
a + -5(-20 + a) = 0
a + (-20 * -5 + a * -5) = 0
a + (100 + -5a) = 0

Reorder the terms:
100 + a + -5a = 0

Combine like terms: a + -5a = -4a
100 + -4a = 0

Solving
100 + -4a = 0

Solving for variable 'a'.

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

Add '-100' to each side of the equation.
100 + -100 + -4a = 0 + -100

Combine like terms: 100 + -100 = 0
0 + -4a = 0 + -100
-4a = 0 + -100

Combine like terms: 0 + -100 = -100
-4a = -100

Divide each side by '-4'.
a = 25

Simplifying
a = 25

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