Question

Выполни действия 81: 9+26*6-144: 72 ; 4*18-9-32: 8+111*8 ; (25*3: 15)*(48*2: 16) ; (12*7: 42)*(16*6: 24) по действиям

Answer 1

81 : 9 + 26* 6- 144: 72 = 163
1) 81 : 9 = 9
2) 26 * 6 = 156
3) 144 : 72 = 2
4) 9 + 156 = 165
5) 165 - 2 = 163

4 * 18 - 9 - 32 : 8 + 111 * 8 = 947
1) 4 * 18 = 72
2) 32 : 8 = 4
3) 111 * 8 = 888
4) 72 - 9 = 63
5) 63 - 4 = 59
6) 59 + 888 = 947

(25 * 3 : 15) * (48 * 2 : 16) = 30
1) 25 * 3 = 75
2) 75 : 15 = 5
3) 48 * 2 = 96
4) 96 : 16 = 6
5) 5 * 6 = 30

(12 * 7 : 42) * (16 * 6 : 24) = 8
1) 12 * 7 = 84
2) 84 : 42 = 2
3) 16 * 6 = 96
4) 96 : 24 = 4
5) 2 * 4 = 8

Answer 2

1. $\frac{81}{9}+26*6-\frac{144}{72}=9+156-2=165-2=163;$

2. $4*18-9-\frac{32}{8}+111*8=72-9-4+888=72+888-9-4=960-13=947;$

3. $(\frac{25*3}{15})(\frac{48*2}{16})=(\frac{25*1}{5})(\frac{48*1}{8})=(\frac{5*1}{1})(\frac{6*1}{1})=5*6=30;$

4. $(\frac{12*7}{42})(\frac{16*6}{24})=(\frac{12*1}{6})(\frac{16*1}{4})=(\frac{2*1}{1})(\frac{4*1}{1})=2*4=8.$