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a + b = 340,15
a + b/2 = 220,1
wiec:
b = 340,15 - a
to:
a + b/2 = 220,1 /*2
2a +b = 440,2
2a + (340,15 - a) = 440,2
2a + 340,15 - a = 440,2
a = 440,2 - 340,15
a = 100,05
podstawiajac obliczone a do a + b = 340,15 uzyskujemy
100,05 + b = 340,15
b = 340,15 - 100,05
b = 240,1
Te liczby to a=100,05 i b=240,1
x+y=340,15
x+ ½y=220,1
x=340,15-y
x+ ½y=220,1
x=340,15-y
340,15-y+½y=220,1
x=340,15-y
340,15-½y=220,1
x=340,15-y
-½y=-120,05
x=340,15-y
y=240,1
x+240,1=340,15
x=100,5
x=100,5 ; y=240,1
Sprawdzenie:
100,5+120,5=220,1