3+r=10

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Solution for 3+r=10 equation: 


Simplifying
3 + r = 10

Solving
3 + r = 10

Solving for variable 'r'.

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

Add '-3' to each side of the equation.
3 + -3 + r = 10 + -3

Combine like terms: 3 + -3 = 0
0 + r = 10 + -3
r = 10 + -3

Combine like terms: 10 + -3 = 7
r = 7

Simplifying
r = 7

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