4r-1=15

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Solution for 4r-1=15 equation: 


Simplifying
4r + -1 = 15

Reorder the terms:
-1 + 4r = 15

Solving
-1 + 4r = 15

Solving for variable 'r'.

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

Add '1' to each side of the equation.
-1 + 1 + 4r = 15 + 1

Combine like terms: -1 + 1 = 0
0 + 4r = 15 + 1
4r = 15 + 1

Combine like terms: 15 + 1 = 16
4r = 16

Divide each side by '4'.
r = 4

Simplifying
r = 4

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