4a+b+3=12

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Solution for 4a+b+3=12 equation:


Simplifying
4a + b + 3 = 12

Reorder the terms:
3 + 4a + b = 12

Solving
3 + 4a + b = 12

Solving for variable 'a'.

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

Add '-3' to each side of the equation.
3 + 4a + -3 + b = 12 + -3

Reorder the terms:
3 + -3 + 4a + b = 12 + -3

Combine like terms: 3 + -3 = 0
0 + 4a + b = 12 + -3
4a + b = 12 + -3

Combine like terms: 12 + -3 = 9
4a + b = 9

Add '-1b' to each side of the equation.
4a + b + -1b = 9 + -1b

Combine like terms: b + -1b = 0
4a + 0 = 9 + -1b
4a = 9 + -1b

Divide each side by '4'.
a = 2.25 + -0.25b

Simplifying
a = 2.25 + -0.25b

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