10-a=-2a+9

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


Simplifying
10 + -1a = -2a + 9

Reorder the terms:
10 + -1a = 9 + -2a

Solving
10 + -1a = 9 + -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.
10 + -1a + 2a = 9 + -2a + 2a

Combine like terms: -1a + 2a = 1a
10 + 1a = 9 + -2a + 2a

Combine like terms: -2a + 2a = 0
10 + 1a = 9 + 0
10 + 1a = 9

Add '-10' to each side of the equation.
10 + -10 + 1a = 9 + -10

Combine like terms: 10 + -10 = 0
0 + 1a = 9 + -10
1a = 9 + -10

Combine like terms: 9 + -10 = -1
1a = -1

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

Simplifying
a = -1

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