d-6.5+d=-7.2

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Solution for d-6.5+d=-7.2 equation: 


Simplifying
d + -6.5 + d = -7.2

Reorder the terms:
-6.5 + d + d = -7.2

Combine like terms: d + d = 2d
-6.5 + 2d = -7.2

Solving
-6.5 + 2d = -7.2

Solving for variable 'd'.

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

Add '6.5' to each side of the equation.
-6.5 + 6.5 + 2d = -7.2 + 6.5

Combine like terms: -6.5 + 6.5 = 0.0
0.0 + 2d = -7.2 + 6.5
2d = -7.2 + 6.5

Combine like terms: -7.2 + 6.5 = -0.7
2d = -0.7

Divide each side by '2'.
d = -0.35

Simplifying
d = -0.35

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