81=r-(47)

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Solution for 81=r-(47) equation:


Simplifying
81 = r + -1(47)

Multiply -1 * 47
81 = r + -47

Reorder the terms:
81 = -47 + r

Solving
81 = -47 + r

Solving for variable 'r'.

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

Add '-1r' to each side of the equation.
81 + -1r = -47 + r + -1r

Combine like terms: r + -1r = 0
81 + -1r = -47 + 0
81 + -1r = -47

Add '-81' to each side of the equation.
81 + -81 + -1r = -47 + -81

Combine like terms: 81 + -81 = 0
0 + -1r = -47 + -81
-1r = -47 + -81

Combine like terms: -47 + -81 = -128
-1r = -128

Divide each side by '-1'.
r = 128

Simplifying
r = 128

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