r+2d=100

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Solution for r+2d=100 equation: 


Simplifying
r + 2d = 100

Reorder the terms:
2d + r = 100

Solving
2d + r = 100

Solving for variable 'd'.

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

Add '-1r' to each side of the equation.
2d + r + -1r = 100 + -1r

Combine like terms: r + -1r = 0
2d + 0 = 100 + -1r
2d = 100 + -1r

Divide each side by '2'.
d = 50 + -0.5r

Simplifying
d = 50 + -0.5r

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