28-(-1)...

July 2022 1 2 Report

Ребята помогите пожалуйста очень очень срочно надо)27 баллов
-(-7/15-14/45-2/9)*10 1/3-1 1/11*(-1 3/4+2 2/3)
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(-1/4+3/7):3/28-(-1)

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jekadva 1) $\frac{7}{15} + \frac{14}{45}+ \frac{2}{9} = \frac{21+14+10}{45} = \frac{45}{45} =1$
2) $1*10 \frac{1}{3} =10 \frac{1}{3}$
3) $-1 \frac{3}{4} +2 \frac{2}{3} =-1 \frac{9}{12} +2 \frac{8}{12} = \frac{11}{12}$
4) $1 \frac{1}{11} * \frac{11}{12} = \frac{12}{11} * \frac{11}{12} =1$
5) $10 \frac{1}{3} -1=9 \frac{1}{3}$
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6) $- \frac{1}{4} + \frac{3}{7} =- \frac{7}{28} + \frac{12}{28} = \frac{5}{28}$
7) $\frac{5}{28} : \frac{3}{28}= \frac{5}{28} * \frac{28}{3} = \frac{5}{3} =1 \frac{2}{3}$
8) $1 \frac{2}{3} -(-1)=2 \frac{2}{3}$
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9) $9 \frac{1}{3} :2 \frac{2}{3} = \frac{28}{3} : \frac{8}{3} = \frac{28}{3} * \frac{3}{8} = \frac{7}{2} =3 \frac{1}{2}$
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