4=100-4r

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Solution for 4=100-4r equation:


Simplifying
4 = 100 + -4r

Solving
4 = 100 + -4r

Solving for variable 'r'.

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

Add '4r' to each side of the equation.
4 + 4r = 100 + -4r + 4r

Combine like terms: -4r + 4r = 0
4 + 4r = 100 + 0
4 + 4r = 100

Add '-4' to each side of the equation.
4 + -4 + 4r = 100 + -4

Combine like terms: 4 + -4 = 0
0 + 4r = 100 + -4
4r = 100 + -4

Combine like terms: 100 + -4 = 96
4r = 96

Divide each side by '4'.
r = 24

Simplifying
r = 24

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