[5-7r]=3

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Solution for [5-7r]=3 equation: 


Simplifying
[5 + -7r] = 3

Remove brackets around [5 + -7r]
5 + -7r = 3

Solving
5 + -7r = 3

Solving for variable 'r'.

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

Add '-5' to each side of the equation.
5 + -5 + -7r = 3 + -5

Combine like terms: 5 + -5 = 0
0 + -7r = 3 + -5
-7r = 3 + -5

Combine like terms: 3 + -5 = -2
-7r = -2

Divide each side by '-7'.
r = 0.2857142857

Simplifying
r = 0.2857142857

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