10r-4=84

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Solution for 10r-4=84 equation: 


Simplifying
10r + -4 = 84

Reorder the terms:
-4 + 10r = 84

Solving
-4 + 10r = 84

Solving for variable 'r'.

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

Add '4' to each side of the equation.
-4 + 4 + 10r = 84 + 4

Combine like terms: -4 + 4 = 0
0 + 10r = 84 + 4
10r = 84 + 4

Combine like terms: 84 + 4 = 88
10r = 88

Divide each side by '10'.
r = 8.8

Simplifying
r = 8.8

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