98=20+78r

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Solution for 98=20+78r equation: 


Simplifying
98 = 20 + 78r

Solving
98 = 20 + 78r

Solving for variable 'r'.

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

Add '-78r' to each side of the equation.
98 + -78r = 20 + 78r + -78r

Combine like terms: 78r + -78r = 0
98 + -78r = 20 + 0
98 + -78r = 20

Add '-98' to each side of the equation.
98 + -98 + -78r = 20 + -98

Combine like terms: 98 + -98 = 0
0 + -78r = 20 + -98
-78r = 20 + -98

Combine like terms: 20 + -98 = -78
-78r = -78

Divide each side by '-78'.
r = 1

Simplifying
r = 1

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