E+D=40

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Solution for E+D=40 equation: 


Simplifying
E + D = 40

Reorder the terms:
D + E = 40

Solving
D + E = 40

Solving for variable 'D'.

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

Add '-1E' to each side of the equation.
D + E + -1E = 40 + -1E

Combine like terms: E + -1E = 0
D + 0 = 40 + -1E
D = 40 + -1E

Simplifying
D = 40 + -1E

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