21d+5f-11d+9-8=

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Solution for 21d+5f-11d+9-8= equation:


Simplifying
21d + 5f + -11d + 9 + -8 = 0

Reorder the terms:
9 + -8 + 21d + -11d + 5f = 0

Combine like terms: 9 + -8 = 1
1 + 21d + -11d + 5f = 0

Combine like terms: 21d + -11d = 10d
1 + 10d + 5f = 0

Solving
1 + 10d + 5f = 0

Solving for variable 'd'.

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

Add '-1' to each side of the equation.
1 + 10d + -1 + 5f = 0 + -1

Reorder the terms:
1 + -1 + 10d + 5f = 0 + -1

Combine like terms: 1 + -1 = 0
0 + 10d + 5f = 0 + -1
10d + 5f = 0 + -1

Combine like terms: 0 + -1 = -1
10d + 5f = -1

Add '-5f' to each side of the equation.
10d + 5f + -5f = -1 + -5f

Combine like terms: 5f + -5f = 0
10d + 0 = -1 + -5f
10d = -1 + -5f

Divide each side by '10'.
d = -0.1 + -0.5f

Simplifying
d = -0.1 + -0.5f

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