Đáp án:
Giải thích các bước giải:
3) -17-(-3+8-|-12|)+(-13)=-17+3-8+12-13=-23
4) (-12+8-9)-(5-12-7)-|-4|=-12+8-9-5+12+7-4=-3
6) (-10)-(-5+11-7)-(3-2)=-10+5-11+7-3+2=-10
7) (6-5+3)-(-13+7)-|-5|=6-5+3+13-7-5=5
8) -|-12|-(5+|-4|-12)+(-9)=-12-5-4+12-9=-18
9) (-|-5|+3-10)-|3-5-4|=-5+3-10-|-6|=-5+3-10-6=-18
10) |-8-(-4)+5|-|-5+7|=|-8+4+5|-|2|=1-2=-1
11) - (-5 + 3 – 7) – | – (-4) + (-5) + (-8)|=5-3+7-|4-5-8|=5-3+7-|-9|
=5-3+7-9=0
12/ (4 - 7 - 5) – | -10 – (-5) + 8|=4-7-5-|-10+5+8|=4-7-5-|3|=4-7-5-3=-11
13/ - |-5 + 4 – 3| – (-6 + 8 – 12)=-|-4|+6-8+12=-4+6-8+12=6
14/ (-12 – 10 + 25) – |-4 – 3|=-12-10+25-|-7|=-12-10+25-7=-4
15/ - (5 - 7 + 3) - |-5 + 8 – 10|=-5+7-3-|-7|=-5+7-3-7=-8
16/ |11 – 13| – (-12 + 20 – 8 – 10)=|-2|+12-20+8+10=2+12-20+8+10=12
17/ 13 - 17 - |-5 + 8| – (4 – 9 + 3)=13-17-|3|-4+9-3=13-17-3-4+9-3=-5
18/ 25 - |20 – 25 – 7| + (3 – 7 – 9)=25-|-12|+3-7-9=25-12+3-7-9=0
19/ -15 - (4 - 8 + 3 – 12) + |5 – 14|=-15-4+8-3+12+|-9|=-15-4+8-3+12+9=7
20/ |-5 + 8 – 3| – (8 – 12 + 1) – 15=0-8+12-1=3
