8.3+8.3+3.8+r=24.2

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Solution for 8.3+8.3+3.8+r=24.2 equation: 


Simplifying
8.3 + 8.3 + 3.8 + r = 24.2

Combine like terms: 8.3 + 8.3 = 16.6
16.6 + 3.8 + r = 24.2

Combine like terms: 16.6 + 3.8 = 20.4
20.4 + r = 24.2

Solving
20.4 + r = 24.2

Solving for variable 'r'.

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

Add '-20.4' to each side of the equation.
20.4 + -20.4 + r = 24.2 + -20.4

Combine like terms: 20.4 + -20.4 = 0.0
0.0 + r = 24.2 + -20.4
r = 24.2 + -20.4

Combine like terms: 24.2 + -20.4 = 3.8
r = 3.8

Simplifying
r = 3.8

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