вычисли 2/3*(3/4 +5/8) = 2- 5/6 :8/9 = 2/3:(3/4 -5/12) = 3-2/3*6/7= 3/5*(4/21+2/7)= 3-1/10:2/15= 5/6:(3/4-1/12)= 2-3/8*4/5= реши и обьясни
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Ответ:
Пошаговое объяснение:
2/3*(6/8+5/8)=2/3*11/8=11/12
=2-5/6*9/8=2-15/16=1 1/16
=2/3:(9/12-5/12)=2/3:4/12=2/3*12/4=4/2=2
=3-4/7=2 3/7
=3/5*(4/21+6/21)=3/5*10/21=2/7
=3-1/10*15/2=3-3/4=2 1/4
=5/6:(9/12-1/12)=5/6:8/9=5/6*9/8=15/16
=2-3/10=1 7/10