Question

A = ( 100 * 44 + 50 * 64 ) * ( 37414,8 : 1000 + 2242,52 : 100 )

B = ( 16 * 14,96 * 25 ) * ( 27 * 38 + 19 * 146 )

Hãy tính A : B

Answer 1

Answer 2

Cho A = (100·44 + 50·60)·(37414,81000 + 2242,52100)

B = (16·14,96·25)·(27·38 + 19·146)

A = (100·44 + 50·2·30)·(3741,48·1100 + 2242,52·1100)

A = 100.(44 + 30).(3741,48 + 2242,52)·1100

A = 7400·5984·1100 A = 74·5984

B = (16·14,96·25)·(27·38 + 19·146)

B = (4·4·14,96·25)·(27·2·19 + 19·146)

B = 100·4·14,96 + 19.(146 + 54)

B = 1496·4 + 19·200 

B=5984*19*200

==>AB=5984*745984*19*200

AB=7419*200

AB=3719*100(giảm hai vế đi hai lần)

=>A;B=37/1900

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