-0.2(10d-5)=9

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Solution for -0.2(10d-5)=9 equation: 


Simplifying
-0.2(10d + -5) = 9

Reorder the terms:
-0.2(-5 + 10d) = 9
(-5 * -0.2 + 10d * -0.2) = 9
(1 + -2d) = 9

Solving
1 + -2d = 9

Solving for variable 'd'.

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

Add '-1' to each side of the equation.
1 + -1 + -2d = 9 + -1

Combine like terms: 1 + -1 = 0
0 + -2d = 9 + -1
-2d = 9 + -1

Combine like terms: 9 + -1 = 8
-2d = 8

Divide each side by '-2'.
d = -4

Simplifying
d = -4

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