20-4d=11

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Solution for 20-4d=11 equation: 


Simplifying
20 + -4d = 11

Solving
20 + -4d = 11

Solving for variable 'd'.

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

Add '-20' to each side of the equation.
20 + -20 + -4d = 11 + -20

Combine like terms: 20 + -20 = 0
0 + -4d = 11 + -20
-4d = 11 + -20

Combine like terms: 11 + -20 = -9
-4d = -9

Divide each side by '-4'.
d = 2.25

Simplifying
d = 2.25

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