-9.4+2(4.5+1.4D)=2(.4D+2.3)

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Solution for -9.4+2(4.5+1.4D)=2(.4D+2.3) equation: 


Simplifying
-9.4 + 2(4.5 + 1.4D) = 2(0.4D + 2.3)
-9.4 + (4.5 * 2 + 1.4D * 2) = 2(0.4D + 2.3)
-9.4 + (9 + 2.8D) = 2(0.4D + 2.3)

Combine like terms: -9.4 + 9 = -0.4
-0.4 + 2.8D = 2(0.4D + 2.3)

Reorder the terms:
-0.4 + 2.8D = 2(2.3 + 0.4D)
-0.4 + 2.8D = (2.3 * 2 + 0.4D * 2)
-0.4 + 2.8D = (4.6 + 0.8D)

Solving
-0.4 + 2.8D = 4.6 + 0.8D

Solving for variable 'D'.

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

Add '-0.8D' to each side of the equation.
-0.4 + 2.8D + -0.8D = 4.6 + 0.8D + -0.8D

Combine like terms: 2.8D + -0.8D = 2D
-0.4 + 2D = 4.6 + 0.8D + -0.8D

Combine like terms: 0.8D + -0.8D = 0.0
-0.4 + 2D = 4.6 + 0.0
-0.4 + 2D = 4.6

Add '0.4' to each side of the equation.
-0.4 + 0.4 + 2D = 4.6 + 0.4

Combine like terms: -0.4 + 0.4 = 0.0
0.0 + 2D = 4.6 + 0.4
2D = 4.6 + 0.4

Combine like terms: 4.6 + 0.4 = 5
2D = 5

Divide each side by '2'.
D = 2.5

Simplifying
D = 2.5

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