(1,75 * 2\5+1,75:1)*1 5\7 = 4,2
1) 1,75 * 2\5 = 1 3/4 · 2/5 = 7/4 · 2/5 = 7/10 = 0,7
2) 1,75:1= 1,75
3) 0,7 + 1,75 = 2,45
4) 2,45 ·1 5/7 = 2 9/20 ·1 5/7 = 49/20 · 12/7 = 42/10 = 4,2
2+1 4\11 * 0,22:0,01 = 32
1) 1 4\11 * 0,22 = 15/11 ·11/50 = 3/10
2)3/10 : 1/100 = 30
3) 2 + 30 = 32
(1,75 * 2\5+1,75:1)*1 5\7 = 4,2
1) 1,75 * 2\5 = 1 3/4 · 2/5 = 7/4 · 2/5 = 7/10 = 0,7
2) 1,75:1= 1,75
3) 0,7 + 1,75 = 2,45
4) 2,45 ·1 5/7 = 2 9/20 ·1 5/7 = 49/20 · 12/7 = 42/10 = 4,2
2+1 4\11 * 0,22:0,01 = 32
1) 1 4\11 * 0,22 = 15/11 ·11/50 = 3/10
2)3/10 : 1/100 = 30
3) 2 + 30 = 32