1⅙-(-2¹/₁₂)=¹⁴/₁₂+²⁵/₁₂=³⁹/₁₂=3¼ 3,7-4⅖=3,7-4,4=-0,7 (-⅞)+(-0,7)=-0,875-0,7=-1,575 1,4-(-1¾)=1,4+1,75=3,15 (-2⅙)-(-1,6)=-¹³/₆+⁸/₅=-⁶⁵/₃₀+⁴⁸/₃₀=-¹⁷/₃₀
a) 1i1/6-(-2i1/12) = 7/6 + 25/12 =14/12 + 25/12 = 39/12 = 3 i 1/4 b) 3,7-4i2/5 = 37/10 - 44/10 = -7/10 c) (-7/8)+(-0.7) = -7/8 - 10/7 = -49/56 - 80/56 = -31/56 d) 1,4-(-1i3/4) = 14/10 + 7/4 = 56/40 + 70/40 = 126/40 = 3 i 3/20 e) (-2i1/6)-(-1,6) = - 13/6 + 16/10 = - 130/60 + 96/60 = -40/60 = - 4/6 = -2/3
1i1/6-(-2i1/12)=1 1/6+2 2/12=1 1/6+2 1/6=3 2/6=3 1/3 3,7-4i2/5=3 7/10-4 4/10=-7/10 (-7/8)+(-0.7)=-7/80-56/80=-63/80 1,4-(-1i3/4)=1 8/20+1 15/20=3 3/20 (-2i1/6)-(-1,6)=-2 5/30+1 18/30=-17/30
