3a+2-5a=7+4n

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Solution for 3a+2-5a=7+4n equation:


Simplifying
3a + 2 + -5a = 7 + 4n

Reorder the terms:
2 + 3a + -5a = 7 + 4n

Combine like terms: 3a + -5a = -2a
2 + -2a = 7 + 4n

Solving
2 + -2a = 7 + 4n

Solving for variable 'a'.

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

Add '-2' to each side of the equation.
2 + -2 + -2a = 7 + -2 + 4n

Combine like terms: 2 + -2 = 0
0 + -2a = 7 + -2 + 4n
-2a = 7 + -2 + 4n

Combine like terms: 7 + -2 = 5
-2a = 5 + 4n

Divide each side by '-2'.
a = -2.5 + -2n

Simplifying
a = -2.5 + -2n

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