51=3.50d+6+5.50d

Solution for 51=3.50d+6+5.50d equation:

Simplifying
51 = 3.50d + 6 + 5.50d

Reorder the terms:
51 = 6 + 3.50d + 5.50d

Combine like terms: 3.50d + 5.50d = 9d
51 = 6 + 9d

Solving
51 = 6 + 9d

Solving for variable 'd'.

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

Add '-9d' to each side of the equation.
51 + -9d = 6 + 9d + -9d

Combine like terms: 9d + -9d = 0
51 + -9d = 6 + 0
51 + -9d = 6

Add '-51' to each side of the equation.
51 + -51 + -9d = 6 + -51

Combine like terms: 51 + -51 = 0
0 + -9d = 6 + -51
-9d = 6 + -51

Combine like terms: 6 + -51 = -45
-9d = -45

Divide each side by '-9'.
d = 5

Simplifying
d = 5