1.5O+2.5(O-1)=12.5

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Solution for 1.5O+2.5(O-1)=12.5 equation: 


Simplifying
1.5O + 2.5(O + -1) = 12.5

Reorder the terms:
1.5O + 2.5(-1 + O) = 12.5
1.5O + (-1 * 2.5 + O * 2.5) = 12.5
1.5O + (-2.5 + 2.5O) = 12.5

Reorder the terms:
-2.5 + 1.5O + 2.5O = 12.5

Combine like terms: 1.5O + 2.5O = 4O
-2.5 + 4O = 12.5

Solving
-2.5 + 4O = 12.5

Solving for variable 'O'.

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

Add '2.5' to each side of the equation.
-2.5 + 2.5 + 4O = 12.5 + 2.5

Combine like terms: -2.5 + 2.5 = 0.0
0.0 + 4O = 12.5 + 2.5
4O = 12.5 + 2.5

Combine like terms: 12.5 + 2.5 = 15
4O = 15

Divide each side by '4'.
O = 3.75

Simplifying
O = 3.75

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