6(3.5+r)-1=7r-r

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Solution for 6(3.5+r)-1=7r-r equation: 


Simplifying
6(3.5 + r) + -1 = 7r + -1r
(3.5 * 6 + r * 6) + -1 = 7r + -1r
(21 + 6r) + -1 = 7r + -1r

Reorder the terms:
21 + -1 + 6r = 7r + -1r

Combine like terms: 21 + -1 = 20
20 + 6r = 7r + -1r

Combine like terms: 7r + -1r = 6r
20 + 6r = 6r

Add '-6r' to each side of the equation.
20 + 6r + -6r = 6r + -6r

Combine like terms: 6r + -6r = 0
20 + 0 = 6r + -6r
20 = 6r + -6r

Combine like terms: 6r + -6r = 0
20 = 0

Solving
20 = 0

Couldn't find a variable to solve for.

This equation is invalid, the left and right sides are not equal, therefore there is no solution.

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