-6=-3.9+d

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Solution for -6=-3.9+d equation:


Simplifying
-6 = -3.9 + d

Solving
-6 = -3.9 + d

Solving for variable 'd'.

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

Add '-1d' to each side of the equation.
-6 + -1d = -3.9 + d + -1d

Combine like terms: d + -1d = 0
-6 + -1d = -3.9 + 0
-6 + -1d = -3.9

Add '6' to each side of the equation.
-6 + 6 + -1d = -3.9 + 6

Combine like terms: -6 + 6 = 0
0 + -1d = -3.9 + 6
-1d = -3.9 + 6

Combine like terms: -3.9 + 6 = 2.1
-1d = 2.1

Divide each side by '-1'.
d = -2.1

Simplifying
d = -2.1

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