0.9a+0.5=-3.5+0.4a

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Solution for 0.9a+0.5=-3.5+0.4a equation: 


Simplifying
0.9a + 0.5 = -3.5 + 0.4a

Reorder the terms:
0.5 + 0.9a = -3.5 + 0.4a

Solving
0.5 + 0.9a = -3.5 + 0.4a

Solving for variable 'a'.

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

Add '-0.4a' to each side of the equation.
0.5 + 0.9a + -0.4a = -3.5 + 0.4a + -0.4a

Combine like terms: 0.9a + -0.4a = 0.5a
0.5 + 0.5a = -3.5 + 0.4a + -0.4a

Combine like terms: 0.4a + -0.4a = 0.0
0.5 + 0.5a = -3.5 + 0.0
0.5 + 0.5a = -3.5

Add '-0.5' to each side of the equation.
0.5 + -0.5 + 0.5a = -3.5 + -0.5

Combine like terms: 0.5 + -0.5 = 0.0
0.0 + 0.5a = -3.5 + -0.5
0.5a = -3.5 + -0.5

Combine like terms: -3.5 + -0.5 = -4
0.5a = -4

Divide each side by '0.5'.
a = -8

Simplifying
a = -8

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