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solve for r
literal equation[tex]S = \frac{a}{a-r}[/tex]


Sagot :

towl35

Step-by-step explanation:

[tex]s = \frac{a}{a - r} [/tex]

multiply both sides by a - r

[tex](a - r)s = a[/tex]

divide both sides by s

[tex]a - r = \frac{a}{s} [/tex]

subtract a from both sides

[tex] - r = \frac{a}{s} - a[/tex]

invert the signs

[tex]r = - \frac{a}{s} + a[/tex]