A+7b+3A+5b=

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Solution for A+7b+3A+5b= equation:


Simplifying
A + 7b + 3A + 5b = 0

Reorder the terms:
A + 3A + 7b + 5b = 0

Combine like terms: A + 3A = 4A
4A + 7b + 5b = 0

Combine like terms: 7b + 5b = 12b
4A + 12b = 0

Solving
4A + 12b = 0

Solving for variable 'A'.

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

Add '-12b' to each side of the equation.
4A + 12b + -12b = 0 + -12b

Combine like terms: 12b + -12b = 0
4A + 0 = 0 + -12b
4A = 0 + -12b
Remove the zero:
4A = -12b

Divide each side by '4'.
A = -3b

Simplifying
A = -3b

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