d+(d-7)=8.55

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Solution for d+(d-7)=8.55 equation:


Simplifying
d + (d + -7) = 8.55

Reorder the terms:
d + (-7 + d) = 8.55

Remove parenthesis around (-7 + d)
d + -7 + d = 8.55

Reorder the terms:
-7 + d + d = 8.55

Combine like terms: d + d = 2d
-7 + 2d = 8.55

Solving
-7 + 2d = 8.55

Solving for variable 'd'.

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

Add '7' to each side of the equation.
-7 + 7 + 2d = 8.55 + 7

Combine like terms: -7 + 7 = 0
0 + 2d = 8.55 + 7
2d = 8.55 + 7

Combine like terms: 8.55 + 7 = 15.55
2d = 15.55

Divide each side by '2'.
d = 7.775

Simplifying
d = 7.775

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