a+6*r=91

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Solution for a+6*r=91 equation: 


Simplifying
a + 6r = 91

Solving
a + 6r = 91

Solving for variable 'a'.

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

Add '-6r' to each side of the equation.
a + 6r + -6r = 91 + -6r

Combine like terms: 6r + -6r = 0
a + 0 = 91 + -6r
a = 91 + -6r

Simplifying
a = 91 + -6r

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