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science mix
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ax+by= c---------------1dx+ey= f---------------2multiply equation 1 by d and equation 2 by a , to give:adx + bdy = cd-------3adx + aey = af--------4Subtract equation 4 from equation 3bdy - aey = cd-afsimplifying, we havey(bd-ae) = cd-afdividing both sides by bd-aey(bd-ae)/bd-ae = cd-af/bd-aey= cd-af/bd-aeDerivation for xax + by = c-----------1dx +ey = f------------2Multiply equation1 by e and equation 2 by b, to giveaex ...
3
June
Acne (Pimples)
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science mix
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