r+1.3=4.2

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Solution for r+1.3=4.2 equation: 


Simplifying
r + 1.3 = 4.2

Reorder the terms:
1.3 + r = 4.2

Solving
1.3 + r = 4.2

Solving for variable 'r'.

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

Add '-1.3' to each side of the equation.
1.3 + -1.3 + r = 4.2 + -1.3

Combine like terms: 1.3 + -1.3 = 0.0
0.0 + r = 4.2 + -1.3
r = 4.2 + -1.3

Combine like terms: 4.2 + -1.3 = 2.9
r = 2.9

Simplifying
r = 2.9

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