10.4=0.5a+0.4-0.4a+0.9a

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Solution for 10.4=0.5a+0.4-0.4a+0.9a equation:


Simplifying
10.4 = 0.5a + 0.4 + -0.4a + 0.9a

Reorder the terms:
10.4 = 0.4 + 0.5a + -0.4a + 0.9a

Combine like terms: 0.5a + -0.4a = 0.1a
10.4 = 0.4 + 0.1a + 0.9a

Combine like terms: 0.1a + 0.9a = 1a
10.4 = 0.4 + 1a

Solving
10.4 = 0.4 + 1a

Solving for variable 'a'.

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

Add '-1a' to each side of the equation.
10.4 + -1a = 0.4 + 1a + -1a

Combine like terms: 1a + -1a = 0
10.4 + -1a = 0.4 + 0
10.4 + -1a = 0.4

Add '-10.4' to each side of the equation.
10.4 + -10.4 + -1a = 0.4 + -10.4

Combine like terms: 10.4 + -10.4 = 0.0
0.0 + -1a = 0.4 + -10.4
-1a = 0.4 + -10.4

Combine like terms: 0.4 + -10.4 = -10
-1a = -10

Divide each side by '-1'.
a = 10

Simplifying
a = 10

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