r-47=-42

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Solution for r-47=-42 equation: 


Simplifying
r + -47 = -42

Reorder the terms:
-47 + r = -42

Solving
-47 + r = -42

Solving for variable 'r'.

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

Add '47' to each side of the equation.
-47 + 47 + r = -42 + 47

Combine like terms: -47 + 47 = 0
0 + r = -42 + 47
r = -42 + 47

Combine like terms: -42 + 47 = 5
r = 5

Simplifying
r = 5

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