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25-15=10
yg trkecil 15
Diketahui:
a + b = 40
a - b = 10
Ditanyakan:
b
Penyelesaian:
Eliminasi untuk mencari b
a + b = 40
a - b = 10
-------------- -
2b = 30
b = 30/2
b = 15
Bilangan terkecil adalah 15