R+3.5=4

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Solution for R+3.5=4 equation: 


Simplifying
R + 3.5 = 4

Reorder the terms:
3.5 + R = 4

Solving
3.5 + R = 4

Solving for variable 'R'.

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

Add '-3.5' to each side of the equation.
3.5 + -3.5 + R = 4 + -3.5

Combine like terms: 3.5 + -3.5 = 0.0
0.0 + R = 4 + -3.5
R = 4 + -3.5

Combine like terms: 4 + -3.5 = 0.5
R = 0.5

Simplifying
R = 0.5

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