Por favor me ajudem nessas contas -5,1-1,9 (8/6)-(+5/3) (-1/9):(+2/7)
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-5,1-1,9 (8/6)-(+5/3) (-1/9):(+2/7)=- 51/10 - 19/10 *8/6 -(+5/3) (-1/9) : (+2/7)=
-51/10 - 38/15 - (-5/27) : (+2/7)=
-51/10 - 38/15 - (-5/27 * 7/2) =
-51/10 - 38/15 - (-35/54)=
-51/10 - 38/15 + 35/54 = ----mmc(10,15,54)=270
-1377/270 - 684/270 + 175/270 =
-1886/270 = -943/135
-51/10 - 38/15 - (-5/27) : (+2/7)=
-51/10 - 38/15 - (-5/27 * 7/2) =
-51/10 - 38/15 - (-35/54)=
-51/10 - 38/15 + 35/54 = ----mmc(10,15,54)=270
-1377/270 - 684/270 + 175/270 =
-1886/270 = -943/135
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