rozwiąż:
(1/3 + 2/7) : (1 - 1/9) + 3/7=?
(7/21+6/21):(9/9-1/9)=13/21*9/8=13/3*1/8=13/24
(1/3 + 2/7) : (1 - 1/9) + 3/7=(7/21 + 6/21) : 8/9 + 3/7 = 117/168 + 3/7 = 117/168 + 72/168 = 189/168= 1 21/168 = 1 1/8
(1/3 + 2/7) : (1 - 1/9) + 3/7 = (7/21 + 6/21) : (9/9 - 1/9) + 3/7 = 13/21 : 8/9 + 3/7 = 13/21 * 9/8 + 3/7 = 117/168 + 3/7 = 117/168 + 72/168 = 189/168 = 1 21/168 = 1 1/8
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(7/21+6/21):(9/9-1/9)=13/21*9/8=13/3*1/8=13/24
(1/3 + 2/7) : (1 - 1/9) + 3/7=(7/21 + 6/21) : 8/9 + 3/7 = 117/168 + 3/7 = 117/168 + 72/168 = 189/168= 1 21/168 = 1 1/8
(1/3 + 2/7) : (1 - 1/9) + 3/7 = (7/21 + 6/21) : (9/9 - 1/9) + 3/7 = 13/21 : 8/9 + 3/7 = 13/21 * 9/8 + 3/7 = 117/168 + 3/7 = 117/168 + 72/168 = 189/168 = 1 21/168 = 1 1/8