25=7+r

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Solution for 25=7+r equation:


Simplifying
25 = 7 + r

Solving
25 = 7 + 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.
25 + -1r = 7 + r + -1r

Combine like terms: r + -1r = 0
25 + -1r = 7 + 0
25 + -1r = 7

Add '-25' to each side of the equation.
25 + -25 + -1r = 7 + -25

Combine like terms: 25 + -25 = 0
0 + -1r = 7 + -25
-1r = 7 + -25

Combine like terms: 7 + -25 = -18
-1r = -18

Divide each side by '-1'.
r = 18

Simplifying
r = 18

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