a-3.5=a+2.1

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Solution for a-3.5=a+2.1 equation: 


Simplifying
a + -3.5 = a + 2.1

Reorder the terms:
-3.5 + a = a + 2.1

Reorder the terms:
-3.5 + a = 2.1 + a

Add '-1a' to each side of the equation.
-3.5 + a + -1a = 2.1 + a + -1a

Combine like terms: a + -1a = 0
-3.5 + 0 = 2.1 + a + -1a
-3.5 = 2.1 + a + -1a

Combine like terms: a + -1a = 0
-3.5 = 2.1 + 0
-3.5 = 2.1

Solving
-3.5 = 2.1

Couldn't find a variable to solve for.

This equation is invalid, the left and right sides are not equal, therefore there is no solution.

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