2r+9=10

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Solution for 2r+9=10 equation: 


Simplifying
2r + 9 = 10

Reorder the terms:
9 + 2r = 10

Solving
9 + 2r = 10

Solving for variable 'r'.

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

Add '-9' to each side of the equation.
9 + -9 + 2r = 10 + -9

Combine like terms: 9 + -9 = 0
0 + 2r = 10 + -9
2r = 10 + -9

Combine like terms: 10 + -9 = 1
2r = 1

Divide each side by '2'.
r = 0.5

Simplifying
r = 0.5

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