3a-0.2(4a-1)=9

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Solution for 3a-0.2(4a-1)=9 equation:


Simplifying
3a + -0.2(4a + -1) = 9

Reorder the terms:
3a + -0.2(-1 + 4a) = 9
3a + (-1 * -0.2 + 4a * -0.2) = 9
3a + (0.2 + -0.8a) = 9

Reorder the terms:
0.2 + 3a + -0.8a = 9

Combine like terms: 3a + -0.8a = 2.2a
0.2 + 2.2a = 9

Solving
0.2 + 2.2a = 9

Solving for variable 'a'.

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

Add '-0.2' to each side of the equation.
0.2 + -0.2 + 2.2a = 9 + -0.2

Combine like terms: 0.2 + -0.2 = 0.0
0.0 + 2.2a = 9 + -0.2
2.2a = 9 + -0.2

Combine like terms: 9 + -0.2 = 8.8
2.2a = 8.8

Divide each side by '2.2'.
a = 4

Simplifying
a = 4

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