oblicz : 1.5 +2 i jedna 2 3 i dwie 1 - 2 *1 i jedna druga w nawiasie 2,4+7,6 zamknąć nawias * 0,5 28,8:1,2
1,5 + 2 1/2 = 3/2 + 5/2 = 8/2 = 4
3 2/1 - 2*1 1/2 = 5 - 3 = 2
(2,4 + 7,6)* 0,5 =10 * 0,5 = 5
28,8 :1,2 =24
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1,5 + 2 1/2 = 3/2 + 5/2 = 8/2 = 4
3 2/1 - 2*1 1/2 = 5 - 3 = 2
(2,4 + 7,6)* 0,5 =10 * 0,5 = 5
28,8 :1,2 =24