55⁶×33⁷ / 11¹³×15⁶ ; 78⁸×36⁷ / 39⁸×72⁶ ; 0.64-1/25 / 0.8(4/5×1.25) ; 3.9×0.24÷5/16 / ( 4.06-2,1/2 ) × 0.8 × 4, 4/5. Created by emilijasaw. matematika-ru

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55⁶×33⁷ / 11¹³×15⁶ ; 78⁸×36⁷ / 39⁸×72⁶ ; 0.64-1/25 / 0.8(4/5×1.25) ; 3.9×0.24÷5/16 / ( 4.06-2,1/2 ) × 0.8 × 4, 4/5

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ahta $1) \frac{55^6*33^7}{11^7*11^6*15^6}= \frac{(5*11)^6*(3*11)^7}{11^6*11^7*(3*5)^6}= \frac{(5*11)^6*(3*11)^7}{(5*11)^6*11^7*3^6}=3$
2) $\frac{(2*39)^8*36^7}{39^8*(2*36)^6}= \frac{2^2*36}{1}=144$
3) $\frac{0.64-0.04}{0.8(0.8*1.25)}= \frac{0.6}{0.8}=0.75$
4) $\frac{3.9*2.4: \frac{5}{16} }{(4.06-2.5)*0.8*4 \frac{4}{5} }= \frac{9.36* \frac{16}{5} }{1.56*0.8*4.8}= \frac{11.7*16}{1.56*5*4.8}= \frac{187.2}{37.44}=5$

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