Question

heyylowws

X-Y=5
2X-Y=4
cara ganda

Answer 1

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ecastudy

penyelesaian :

(x-y) - (2x-y) = 5 - 4
x-y-2x+y = 1
x-2x = 1
-x = 1
x = -1

mencari nilai Y :
x-y = 5
-1-y = 5
-y = 5+1
-y = 6
y = -6

aljabar