0.9(5x+15)=2.5(x+3)

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Solution for 0.9(5x+15)=2.5(x+3) equation:


Simplifying
0.9(5x + 15) = 2.5(x + 3)

Reorder the terms:
0.9(15 + 5x) = 2.5(x + 3)
(15 * 0.9 + 5x * 0.9) = 2.5(x + 3)
(13.5 + 4.5x) = 2.5(x + 3)

Reorder the terms:
13.5 + 4.5x = 2.5(3 + x)
13.5 + 4.5x = (3 * 2.5 + x * 2.5)
13.5 + 4.5x = (7.5 + 2.5x)

Solving
13.5 + 4.5x = 7.5 + 2.5x

Solving for variable 'x'.

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

Add '-2.5x' to each side of the equation.
13.5 + 4.5x + -2.5x = 7.5 + 2.5x + -2.5x

Combine like terms: 4.5x + -2.5x = 2x
13.5 + 2x = 7.5 + 2.5x + -2.5x

Combine like terms: 2.5x + -2.5x = 0.0
13.5 + 2x = 7.5 + 0.0
13.5 + 2x = 7.5

Add '-13.5' to each side of the equation.
13.5 + -13.5 + 2x = 7.5 + -13.5

Combine like terms: 13.5 + -13.5 = 0.0
0.0 + 2x = 7.5 + -13.5
2x = 7.5 + -13.5

Combine like terms: 7.5 + -13.5 = -6
2x = -6

Divide each side by '2'.
x = -3

Simplifying
x = -3

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