10+r=30

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Solution for 10+r=30 equation: 


Simplifying
10 + r = 30

Solving
10 + r = 30

Solving for variable 'r'.

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

Add '-10' to each side of the equation.
10 + -10 + r = 30 + -10

Combine like terms: 10 + -10 = 0
0 + r = 30 + -10
r = 30 + -10

Combine like terms: 30 + -10 = 20
r = 20

Simplifying
r = 20

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