2a+20-4a=10

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Solution for 2a+20-4a=10 equation:


Simplifying
2a + 20 + -4a = 10

Reorder the terms:
20 + 2a + -4a = 10

Combine like terms: 2a + -4a = -2a
20 + -2a = 10

Solving
20 + -2a = 10

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 + -2a = 10 + -20

Combine like terms: 20 + -20 = 0
0 + -2a = 10 + -20
-2a = 10 + -20

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

Divide each side by '-2'.
a = 5

Simplifying
a = 5

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