Matematyka
Apoliina
2017-06-25 04:41:19
Bardzo prosze zadanie z matmy dam naj,,, - 4/3 -(- 1 1/7) = b/ 1/2 + ( -4/4) + 1 3/9 = c/ 7/8 - 4/3 + 1/2 - 4 6/7 = d/ 8-4/3 + 6/12 = Bardzo prosze dam naj,,
Odpowiedź
Diggory12
2017-06-25 06:14:44

a) - 4/3 - (- 1 1/7) = - 4/3 + 1 1/7 = - 28/21 + 1 3/21 = - 28/21 + 24/21 = - 4/21 b) 1/2 + (- 4/4) + 1 3/9 = 1/2 - 1 + 1 1/2 = - 1/2 + 1 1/2 = 1 c) 7/8 - 4/3 + 1/2 - 4 6/7 = 21/24 - 32/24 + 12/24 - 4 6/7 =  = - 11/24 + 12/24 - 4 6/7 = 1/24 - 4 6/7 = 7/168 - 4 144/168 = - 4 137/168 d) 8 - 4/3 + 6/12 = 7 3/3 - 1 1/3 + 6/12 = 6 2/3 + 6/12 = 6 8/12 + 6/12 =  = 6 14/12 = 7 2/12 = 7 1/6

estella11
2017-06-25 06:15:59

a) -4/3-(-1 1/7)=-4/3+1 1/7=-28/21+1 3/21=-28/21+24/21=-4/21 b) 1/2+(-4/4)+1 3/9=9/18-1+1 6/18=1 15/18-1=15/18=5/6 c) 7/8-4/3+1/2-4 6/7=147/168-224/168+84/168-4 144/168= 231/168-4 368/168=-6 32/168+231/168=-6 32/168+1 63/168=-4 137/168 d) 8-4/3+6/12=8-16/12+6/12=8-1 1/3+6/12=6 2/3+6/12=6 8/12+6/12=6 14/12= 7 2/12=7 1/6

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