20-2a=2(4+5a)

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Solution for 20-2a=2(4+5a) equation:


Simplifying
20 + -2a = 2(4 + 5a)
20 + -2a = (4 * 2 + 5a * 2)
20 + -2a = (8 + 10a)

Solving
20 + -2a = 8 + 10a

Solving for variable 'a'.

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

Add '-10a' to each side of the equation.
20 + -2a + -10a = 8 + 10a + -10a

Combine like terms: -2a + -10a = -12a
20 + -12a = 8 + 10a + -10a

Combine like terms: 10a + -10a = 0
20 + -12a = 8 + 0
20 + -12a = 8

Add '-20' to each side of the equation.
20 + -20 + -12a = 8 + -20

Combine like terms: 20 + -20 = 0
0 + -12a = 8 + -20
-12a = 8 + -20

Combine like terms: 8 + -20 = -12
-12a = -12

Divide each side by '-12'.
a = 1

Simplifying
a = 1

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