Question

a:b=4 rest 17 a-b=3872

Answer 1

a - b = 3,872
a : b = 4,17 => a = b * 4 + 17
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a = ?
b = ?

PRIN METODA FIGURATIVA :

b |---|
a |---|---|---|---|--|

3 p + 17 = 3,872
3 p = 3,872 - 17
3 p = 3,855
p = 3,855 ÷ 3
p = 1,285

b = 1,285
a = 1,285 * 4 + 17
a = 5,140 + 17
a = 5,157

Verificare : 5,157 - 1,285 = 3,872.

Answer 2

b |---|
a |---|---|---|---|--|

3 p + 17 = 3872
3 p = 3872 - 17
3 p = 3855
p = 3855 : 3
p = 1285

b = 1285
a = 1285 ×4 + 17
a = 5140 + 17
a = 5157