0.9d-19+d=2d-10-0.4d

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Solution for 0.9d-19+d=2d-10-0.4d equation:


Simplifying
0.9d + -19 + d = 2d + -10 + -0.4d

Reorder the terms:
-19 + 0.9d + d = 2d + -10 + -0.4d

Combine like terms: 0.9d + d = 1.9d
-19 + 1.9d = 2d + -10 + -0.4d

Reorder the terms:
-19 + 1.9d = -10 + 2d + -0.4d

Combine like terms: 2d + -0.4d = 1.6d
-19 + 1.9d = -10 + 1.6d

Solving
-19 + 1.9d = -10 + 1.6d

Solving for variable 'd'.

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

Add '-1.6d' to each side of the equation.
-19 + 1.9d + -1.6d = -10 + 1.6d + -1.6d

Combine like terms: 1.9d + -1.6d = 0.3d
-19 + 0.3d = -10 + 1.6d + -1.6d

Combine like terms: 1.6d + -1.6d = 0.0
-19 + 0.3d = -10 + 0.0
-19 + 0.3d = -10

Add '19' to each side of the equation.
-19 + 19 + 0.3d = -10 + 19

Combine like terms: -19 + 19 = 0
0 + 0.3d = -10 + 19
0.3d = -10 + 19

Combine like terms: -10 + 19 = 9
0.3d = 9

Divide each side by '0.3'.
d = 30

Simplifying
d = 30

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