santi109
santi109 santi109
  • 03-04-2020
  • Mathematics
contestada

HELP PLEASE!!! ASAP 12 POINTS

HELP PLEASE ASAP 12 POINTS class=

Respuesta :

jcarney2024
jcarney2024 jcarney2024
  • 03-04-2020

Answer:

c=−3 or c=7

Step-by-step explanation:

Step 1: Cross-multiply.

c/3= 7/c−4

c*(c−4)=(7)*(3)

c2−4c=21

Step 2: Subtract 21 from both sides.

c2−4c−21=21−21

c2−4c−21=0

Step 3: Factor left side of equation.

(c+3)(c−7)=0

Step 4: Set factors equal to 0.

c+3=0 or c−7=0

c=−3 or c=7

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