3=7-A

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Solution for 3=7-A equation:


Simplifying
3 = 7 + -1A

Solving
3 = 7 + -1A

Solving for variable 'A'.

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

Add 'A' to each side of the equation.
3 + A = 7 + -1A + A

Combine like terms: -1A + A = 0
3 + A = 7 + 0
3 + A = 7

Add '-3' to each side of the equation.
3 + -3 + A = 7 + -3

Combine like terms: 3 + -3 = 0
0 + A = 7 + -3
A = 7 + -3

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

Simplifying
A = 4

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