Помогите ,плиз ...340 номер

Question

Помогите ,плиз ...340 номер

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Comments

А какой класс??

Answer 1

0,8*7/12=8/10*7/12=2*4*7/(2*5*3*4)=7/(3*5)=7/15
1 2/3*0,6=(3+2)/3*6/10=5*2*3/(3*2*5)=1
1,25*32/45=125/100*32/45=5*25*4*4*2/(4*25*5*9)=4*2/9=8/9
4,5*3 1/3=45/10*(3*3+1)/3=3*15*10/(10*3)=15