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LILY3214 LILY3214
  • 20-09-2016
  • Mathematics
Answered

10x-35+3ax=5ax-7a solve for "a" for which the equation is an identity.



Would the answer be 5x+5 or no

Verified Answer :

rabinshrestha41
rabinshrestha41 rabinshrestha41
  • 20-09-2016

\(10x-35+3ax=5ax-7a \\ 3ax-5ax+7a = -10x+35 \\ -2ax+7a = -10x+35 \\ a(-2x+7)=-10x+35 \\\\ a= \frac{-10x+35}{-2x+7} \\\\ a = \frac{5(-2x+7)}{(-2x+7)} \\\\ a=5\)

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