d+(3d-5)=215

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Solution for d+(3d-5)=215 equation:


Simplifying
d + (3d + -5) = 215

Reorder the terms:
d + (-5 + 3d) = 215

Remove parenthesis around (-5 + 3d)
d + -5 + 3d = 215

Reorder the terms:
-5 + d + 3d = 215

Combine like terms: d + 3d = 4d
-5 + 4d = 215

Solving
-5 + 4d = 215

Solving for variable 'd'.

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

Add '5' to each side of the equation.
-5 + 5 + 4d = 215 + 5

Combine like terms: -5 + 5 = 0
0 + 4d = 215 + 5
4d = 215 + 5

Combine like terms: 215 + 5 = 220
4d = 220

Divide each side by '4'.
d = 55

Simplifying
d = 55

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