9+3+a-b=900

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Solution for 9+3+a-b=900 equation:


Simplifying
9 + 3 + a + -1b = 900

Combine like terms: 9 + 3 = 12
12 + a + -1b = 900

Solving
12 + a + -1b = 900

Solving for variable 'a'.

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

Add '-12' to each side of the equation.
12 + a + -12 + -1b = 900 + -12

Reorder the terms:
12 + -12 + a + -1b = 900 + -12

Combine like terms: 12 + -12 = 0
0 + a + -1b = 900 + -12
a + -1b = 900 + -12

Combine like terms: 900 + -12 = 888
a + -1b = 888

Add 'b' to each side of the equation.
a + -1b + b = 888 + b

Combine like terms: -1b + b = 0
a + 0 = 888 + b
a = 888 + b

Simplifying
a = 888 + b

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