fie proportia a supra 2 = 4 supra 5 b . determinati a) 15ab-2.8 b) 2 supra 3 ab- 1, (7) c). ab + un intreg si 1 supra

LauraJrr

2016-09-26 04:24:39

fie proportia a supra 2 = 4 supra 5 b . determinati a) 15ab-2.8 b) 2 supra 3 ab- 1, (7) c). ab + un intreg si 1 supra 25

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grumezescut

2016-09-26 09:11:37

a/2=4/5b a) 5ab=8 15ab=5abx3=8x3=24 15ab-2.8 =24-2,8=21,20 b) 1, (7)= 1 intreg si 7/9=(9x1+7)/9=16/9 5ab=8 ab=8/5 3ab=3x8/5=24/5 2/3ab=2/24/5=10/24=5/12 5/12-16/9=(3x10-8x16)/72=(30-128)/72=-98/72=49/36 c) ab=8/5 1intreg si 1/25=(25x1+1)/25=26/25 8/5+26/25=(8x5+26)/25=(40+26)/25=66/25

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