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2-11/2x2/5=2-11/5=10/5-11/5=-1/5
2)
(21/2+41/6):11/3-1/8=(63/6+41/6)x3/11-1/8=104/6x3/11-1/8=52x1/11-1/8=52/11-1/8=416/88-11/88=405/88=4 53/88
a może tak był zapisany przykład
2-1 1/2x2/5=2-3/2*2/5=2-3/5=1 2/5
(21/2+41/6):11/3-1/8=(63/6+41/6)*3/11-1/8= 104/6*3/11-1/8=104/22-1/8=416/88- 11/88=405/88=4 53/88