jakysnaky
jakysnaky jakysnaky
  • 23-08-2017
  • Mathematics
contestada

Solve for f and explain please

Solve for f and explain please class=

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tinariek
tinariek tinariek
  • 23-08-2017
Add 9 to 9 (to eliminate it) and add 9 to the 12. 
21= -7f
Divide each side by negative 7.
Answer will be f=-3
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