Tiga orang anak sedang menimbang beratbadannya.ana,boby,charly saling berpasangan.ana dan boby berat mereka berdua 170 kg boby dan charly 150 kg ana dan charly 140 kg tentukan berat masing masing anak tersebut... tolong ya kak..besok di kumpul
A + b = 170; a = 170-b b + c = 150; c = 150 - b a + c = 140 170 - b + 150 - b = 140 320 - 140 = 2b 180 = 2b b = 90 kg a = 170 - 90 = 80 kg c = 150 - 90 = 60 kg
Verified answer
A + b = 170; a = 170-bb + c = 150; c = 150 - b
a + c = 140
170 - b + 150 - b = 140
320 - 140 = 2b
180 = 2b
b = 90 kg
a = 170 - 90 = 80 kg
c = 150 - 90 = 60 kg