Ano ang x at y kung 4x - 5y = 40 at 2x + 10y = 20?

Ano ang x at y kung 4x - 5y = 40 at 2x + 10y = 20?
Anonim

Sagot:

# x = 10, y = 0 #

Paliwanag:

#: 4x-5y = 40 ------ (1) #

#: 2x + 10y = 20 ------ (2) #

#:. (2) xx2 #

#: 4x + 20y = 40 ------ (3) #

#:.(1)-(3)#

#:.- 25y = 0 #

#: y = 0 #

kapalit # y = 0 # sa #(1)#

#:. 4x-5 (0) = 40 #

#: 4x = 40 #

#:. x = 10 #