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a) ⁴₇ : ²₇ =4/7*7/1=2
b)3 ¹₃ : 1 ³₇=10/3*7/10=7/3=2i1/3
c)( - 4 ³₄): 8 ⁴₉ =-19/4*9/76=-9/16
d) ²₃ : ( - 12 ³₄)=2/3*(-4/51)=-8/153
e)⁷₁₁ : 2 ²₅₅ =7/11*55/112=5/16
f) ( - ¹⁷₇ ) : ( - ⁵¹₄₂)=(-17/7)*(-42/51)=2
g) - ⁴₁₅
____ = (-4/15):16/5=(-4/15)*5/16=-1/12
3 ¹₅