Question

(-9,2: 4 3/5+ 3 1/4)*(-0,8)=?

Answer 1

$(9.2:4 \frac{3}{5} +3 \frac{1}{4} )*(-0.8)=? \\ \\ 1) 9.2:4 \frac{3}{5} = \frac{92}{10} : \frac{23}{5} = \frac{92}{10} * \frac{5}{23} =2 \\ \\ 2) 2+3 \frac{1}{4} = \frac{2}{1} + \frac{13}{4} = \frac{8}{4} + \frac{13}{4} = \frac{21}{4} \\ \\ 3) \frac{21}{4} *(-0.8)= \frac{21}{4} *(- \frac{8}{10} )= -\frac{21}{5} =-4 \frac{1}{5} =-4.2$

Ответ: -4,2

Answer 2

(-9,2:4 3/5+3 1/4)*(-0.8)=-1
-9,2:4 3/5 =-2
-2+3 1/4=1.25
1.25*(-0.8)=-1
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