6.4a-2.9=1.4a+12.1

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Solution for 6.4a-2.9=1.4a+12.1 equation:


Simplifying
6.4a + -2.9 = 1.4a + 12.1

Reorder the terms:
-2.9 + 6.4a = 1.4a + 12.1

Reorder the terms:
-2.9 + 6.4a = 12.1 + 1.4a

Solving
-2.9 + 6.4a = 12.1 + 1.4a

Solving for variable 'a'.

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

Add '-1.4a' to each side of the equation.
-2.9 + 6.4a + -1.4a = 12.1 + 1.4a + -1.4a

Combine like terms: 6.4a + -1.4a = 5a
-2.9 + 5a = 12.1 + 1.4a + -1.4a

Combine like terms: 1.4a + -1.4a = 0.0
-2.9 + 5a = 12.1 + 0.0
-2.9 + 5a = 12.1

Add '2.9' to each side of the equation.
-2.9 + 2.9 + 5a = 12.1 + 2.9

Combine like terms: -2.9 + 2.9 = 0.0
0.0 + 5a = 12.1 + 2.9
5a = 12.1 + 2.9

Combine like terms: 12.1 + 2.9 = 15
5a = 15

Divide each side by '5'.
a = 3

Simplifying
a = 3

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