(1,75 * 4/7 - 1,75 : 1 1/8) * 4,5 - 4,5 = - 7
1) 1,75 * 4/7 = 175/100 * 4/7 = 25/25 = 1
2) 1,75 : 1 1/8 = 175/100 : 9/8 = 175/100 * 8/9 = 1400/900 = 1 500/900 = 1 5/9
3) 1 - 1 5/9 = 1 - 14/9 = 9/9 - 14/9 = - 5/9
4) - 5/9 * 4,5 = - 5/9 * 45/10 = - 1/1 * 5/2 = - 5/2
5) - 5/2 - 4,5 = - 5/2 - 45/10 = - 25/10 - 45/10 = - 70/10 = - 7
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(2,75 * 4/11 - 2,75 : 4 1/8) * 2,7 - 2,7 = - 1,8
1) 2,75 * 4/11 = 275/100 * 4/11 = 25/25 = 1
2) 2,75 : 4 1/8 = 275/100 : 33/8 = 275/100 * 8/33 = 2200/3300 = 22/33
3) 1 - 22/33 = 33/33 - 22/33 = 11/33
4) 11/33 * 2,7 = 11/33 * 27/10 = 11/11 * 9/10 = 9/10
5) 9/10 - 2,7 = 0,9 - 2,7 = - 1,8