30+47=r

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Solution for 30+47=r equation:


Simplifying
30 + 47 = r

Combine like terms: 30 + 47 = 77
77 = r

Solving
77 = 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.
77 + -1r = r + -1r

Combine like terms: r + -1r = 0
77 + -1r = 0

Add '-77' to each side of the equation.
77 + -77 + -1r = 0 + -77

Combine like terms: 77 + -77 = 0
0 + -1r = 0 + -77
-1r = 0 + -77

Combine like terms: 0 + -77 = -77
-1r = -77

Divide each side by '-1'.
r = 77

Simplifying
r = 77

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