jetblackcap jetblackcap

23-04-2019
Mathematics

contestada

Please help me with this..

Please help me with this class=

Respuesta :

jimrgrant1 jimrgrant1

23-04-2019

Answer:

f = 1

Step-by-step explanation:

Use the method of cross- multiplication

[tex]\frac{a}{b}[/tex] = [tex]\frac{c}{d}[/tex] ⇒ ad = bc, thus

20f = 5(f + 3) ← distribute

20f = 5f + 15 ( subtract 5f from both sides )

15f = 15 ( divide both sides by 15 )

f = 1

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