18-2.3r=1.9

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Solution for 18-2.3r=1.9 equation: 


Simplifying
18 + -2.3r = 1.9

Solving
18 + -2.3r = 1.9

Solving for variable 'r'.

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

Add '-18' to each side of the equation.
18 + -18 + -2.3r = 1.9 + -18

Combine like terms: 18 + -18 = 0
0 + -2.3r = 1.9 + -18
-2.3r = 1.9 + -18

Combine like terms: 1.9 + -18 = -16.1
-2.3r = -16.1

Divide each side by '-2.3'.
r = 7

Simplifying
r = 7

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