15.81+0.12(x+3)=16.31-0.09x

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Solution for 15.81+0.12(x+3)=16.31-0.09x equation: 


Simplifying
15.81 + 0.12(x + 3) = 16.31 + -0.09x

Reorder the terms:
15.81 + 0.12(3 + x) = 16.31 + -0.09x
15.81 + (3 * 0.12 + x * 0.12) = 16.31 + -0.09x
15.81 + (0.36 + 0.12x) = 16.31 + -0.09x

Combine like terms: 15.81 + 0.36 = 16.17
16.17 + 0.12x = 16.31 + -0.09x

Solving
16.17 + 0.12x = 16.31 + -0.09x

Solving for variable 'x'.

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

Add '0.09x' to each side of the equation.
16.17 + 0.12x + 0.09x = 16.31 + -0.09x + 0.09x

Combine like terms: 0.12x + 0.09x = 0.21x
16.17 + 0.21x = 16.31 + -0.09x + 0.09x

Combine like terms: -0.09x + 0.09x = 0.00
16.17 + 0.21x = 16.31 + 0.00
16.17 + 0.21x = 16.31

Add '-16.17' to each side of the equation.
16.17 + -16.17 + 0.21x = 16.31 + -16.17

Combine like terms: 16.17 + -16.17 = 0.00
0.00 + 0.21x = 16.31 + -16.17
0.21x = 16.31 + -16.17

Combine like terms: 16.31 + -16.17 = 0.14
0.21x = 0.14

Divide each side by '0.21'.
x = 0.6666666667

Simplifying
x = 0.6666666667

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