Matematică
Moldovanmaria74
2

ajutatima va rog:4intregi3/7-8intregi9/14.ajutatima multumesc.  -2intregi3/4-(-32/5)    3intregi7/9-1intregi1/12     2intregi5/8-3intregi5/6     -1intregi3/4+2intregi7/8  va rog multumesc..

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(2) Răspunsuri
alysuka

4 3/7 - 8 9/14 = 31/7 - 121/14 = 62/14 - 121/14 = - 59/14 -2 3/4 - ( - 32/5 ) = - 11/4 + 32/5 = -55/20 + 128/20 = 73/20 3 7/9 - 1 1/12 = 34/9 - 13/12 = 136/36 - 39/36 = 97/36 2 5/8 - 3 5/6 = 21/8 - 23/6 = 63/24 - 92/24 = -29/24 -1 3/4 + 2 7/8 = -7/4 + 23/8 = -14/8 + 23/8 = -9/8

genius31

4 intregi3/7=(4x7+3)/7=21/7 21/7-121/14=(21x2-121)/14=(42-121)/14=-79/14 -11/4-(-32/5)=(-11x5+32x4)/20=(-55+128)/20=73/20 34/9-13/12=(34x4-13x3)/36=(136-39)/36=97/36=2,69(4) 21/8-23/6=(21x3-23x4)/24=(63-92)/24=-29/24=-1,208(3) -7/4+23/8=(-7x2+23)/8=(-14+23)/8=9/8=1,125

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