Вычислите -3 7/9 +(-2 1/9)

Question

Математика: Вычислите -3 7/9 +(-2 1/9)​

alyena2802 · Accepted Answer

1) (540/60+231)/15-1000/8/25 = 11
По действиям:
1. 540/60+ 231= 9 + 231 = 240
2. 240/15 = 16
3. 1000/8 = 125
4. 125/25 = 5
5. 16 - 5 = 11

2) 12900/100-(500-350/7*9) = 79
1.350/7=50
2.50*9=450
3.500-450=50
4.12900/100=129
5.129-50=79

3) (810/3-120)/6+8*(172/4-20) = 209
1.810/3-120=270-120=150
2.150/6=25
3.172/4-20=43-20=23
4.8*23=184
5. 25+184=209

4) (25812*3-109*4)/1000 = 77
1. 25812*3=77436
2.109*4=436
3. 77436-436=77000
4. 77000/1000=77

5) (345.720-72.045*4)/10*3=1,918
1. 72,045*4=288,18
2. 345,720 - 288,18 = 57,54
3. 10*3 = 30
4. 57,54/30=1,918

Вычислите -3 7/9 +(-2 1/9)​

MOGZ ответил