7A-(3A+4)=12

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Solution for 7A-(3A+4)=12 equation:


Simplifying
7A + -1(3A + 4) = 12

Reorder the terms:
7A + -1(4 + 3A) = 12
7A + (4 * -1 + 3A * -1) = 12
7A + (-4 + -3A) = 12

Reorder the terms:
-4 + 7A + -3A = 12

Combine like terms: 7A + -3A = 4A
-4 + 4A = 12

Solving
-4 + 4A = 12

Solving for variable 'A'.

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

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

Combine like terms: -4 + 4 = 0
0 + 4A = 12 + 4
4A = 12 + 4

Combine like terms: 12 + 4 = 16
4A = 16

Divide each side by '4'.
A = 4

Simplifying
A = 4

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