0.4d+9=18

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Solution for 0.4d+9=18 equation: 


Simplifying
0.4d + 9 = 18

Reorder the terms:
9 + 0.4d = 18

Solving
9 + 0.4d = 18

Solving for variable 'd'.

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

Add '-9' to each side of the equation.
9 + -9 + 0.4d = 18 + -9

Combine like terms: 9 + -9 = 0
0 + 0.4d = 18 + -9
0.4d = 18 + -9

Combine like terms: 18 + -9 = 9
0.4d = 9

Divide each side by '0.4'.
d = 22.5

Simplifying
d = 22.5

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