r+2.4=7.8

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Solution for r+2.4=7.8 equation: 


Simplifying
r + 2.4 = 7.8

Reorder the terms:
2.4 + r = 7.8

Solving
2.4 + r = 7.8

Solving for variable 'r'.

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

Add '-2.4' to each side of the equation.
2.4 + -2.4 + r = 7.8 + -2.4

Combine like terms: 2.4 + -2.4 = 0.0
0.0 + r = 7.8 + -2.4
r = 7.8 + -2.4

Combine like terms: 7.8 + -2.4 = 5.4
r = 5.4

Simplifying
r = 5.4

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