63=45-2a

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Solution for 63=45-2a equation:


Simplifying
63 = 45 + -2a

Solving
63 = 45 + -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.
63 + 2a = 45 + -2a + 2a

Combine like terms: -2a + 2a = 0
63 + 2a = 45 + 0
63 + 2a = 45

Add '-63' to each side of the equation.
63 + -63 + 2a = 45 + -63

Combine like terms: 63 + -63 = 0
0 + 2a = 45 + -63
2a = 45 + -63

Combine like terms: 45 + -63 = -18
2a = -18

Divide each side by '2'.
a = -9

Simplifying
a = -9

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