Question 178216
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I think you are trying to express:


*[tex \Large {w_1 \over w_2} = {{f_2 - f} \over {f - f_1}}]


To solve for *[tex \large w_1], just multiply both sides by *[tex \large w_2], thus:


*[tex \Large w_1  = {{w_2(f_2 - f)} \over {f - f_1}}]

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