Ratkaise q 14?

Ratkaise q 14?
Anonim

Vastaus:

Vastaus on # "vaihtoehto (c)" #

Selitys:

Jos # A + b = 2c #

Sitten, # A = 2c-b #

Ja

# A / (a-c) = (2c-b) / (2c-b-c) = (2c-b) / (c-b) #

Siksi, # A / (a-c) + c / (b-c) = (2c-b) / (c-b) + c / (b-c) #

# = (2c-b) / (c-b) -c / (c-b) #

# = (2c-b-c) / (c-b) #

# = (C-b) / (c-b) #

#=1#

Vastaus on # "vaihtoehto (c)" #