9+20=2a+10

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Solution for 9+20=2a+10 equation:


Simplifying
9 + 20 = 2a + 10

Combine like terms: 9 + 20 = 29
29 = 2a + 10

Reorder the terms:
29 = 10 + 2a

Solving
29 = 10 + 2a

Solving for variable 'a'.

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

Add '-2a' to each side of the equation.
29 + -2a = 10 + 2a + -2a

Combine like terms: 2a + -2a = 0
29 + -2a = 10 + 0
29 + -2a = 10

Add '-29' to each side of the equation.
29 + -29 + -2a = 10 + -29

Combine like terms: 29 + -29 = 0
0 + -2a = 10 + -29
-2a = 10 + -29

Combine like terms: 10 + -29 = -19
-2a = -19

Divide each side by '-2'.
a = 9.5

Simplifying
a = 9.5

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