19-r=15

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Solution for 19-r=15 equation: 


Simplifying
19 + -1r = 15

Solving
19 + -1r = 15

Solving for variable 'r'.

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

Add '-19' to each side of the equation.
19 + -19 + -1r = 15 + -19

Combine like terms: 19 + -19 = 0
0 + -1r = 15 + -19
-1r = 15 + -19

Combine like terms: 15 + -19 = -4
-1r = -4

Divide each side by '-1'.
r = 4

Simplifying
r = 4

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