.30x+.30(2x-15)=3.5

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Solution for .30x+.30(2x-15)=3.5 equation: 


Simplifying
0.30x + 0.30(2x + -15) = 3.5

Reorder the terms:
0.30x + 0.30(-15 + 2x) = 3.5
0.30x + (-15 * 0.30 + 2x * 0.30) = 3.5
0.30x + (-4.5 + 0.6x) = 3.5

Reorder the terms:
-4.5 + 0.30x + 0.6x = 3.5

Combine like terms: 0.30x + 0.6x = 0.9x
-4.5 + 0.9x = 3.5

Solving
-4.5 + 0.9x = 3.5

Solving for variable 'x'.

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

Add '4.5' to each side of the equation.
-4.5 + 4.5 + 0.9x = 3.5 + 4.5

Combine like terms: -4.5 + 4.5 = 0.0
0.0 + 0.9x = 3.5 + 4.5
0.9x = 3.5 + 4.5

Combine like terms: 3.5 + 4.5 = 8
0.9x = 8

Divide each side by '0.9'.
x = 8.888888889

Simplifying
x = 8.888888889

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