20-20+12-2+2+3-4+2-1-1-1-1-1-1+10000000-2-3-4-5-6-7-8-9-1-2-3-4-5-6-7-8-9 06/09/2021 Bởi Natalia 20-20+12-2+2+3-4+2-1-1-1-1-1-1+10000000-2-3-4-5-6-7-8-9-1-2-3-4-5-6-7-8-9
Đá án: 20-20+12-2+2+3-4+2-1-1-1-1-1-1+10000000-2-3-4-5-6-7-8-9-1-2-3-4-5-6-7-8-9 20 – 20-2+2+3 -3 = 0+12-4+2-1-1-1-1-1-1+10000000-2-4-5-6-7-8-9-1-2-3-4-5-6-7-8-9 =12-4+2-1-1-1-1-1-1+10000000-2-4-5-6-7-8-9-1-2-3-4-5-6-7-8-9+2-1-1 =12-4-1-1-1-1+10000000-2-4-5-6-7-8-9-1-2-3-4-5-6-7-8-9 =12+10000000-2-4-5-6-7-8-9-1-2-3-4-5-6-7-8-9-4-1-1-1-1 =10000012-[2+4+5+6+7+8+9+1+2+3+4+5+6+7+8+9+4+1+1+1+1] = 10000012 – 94 = 9999908 Chúc bạn học tốt! Bình luận
Đáp án: Giải thích các bước giải: 20-20+12-2+2+3-4+2-1-1-1-1-1-1+10000000-2-3-4-5-6-7-8-9-1-2-3-4-5-6-7-8-9 20 – 20 hết, -2 +2 hết, +3 -3 hết = 0+12-4+2-1-1-1-1-1-1+10000000-2-4-5-6-7-8-9-1-2-3-4-5-6-7-8-9 =12-4+2-1-1-1-1-1-1+10000000-2-4-5-6-7-8-9-1-2-3-4-5-6-7-8-9 +2 – 1 -1 hết =12-4-1-1-1-1+10000000-2-4-5-6-7-8-9-1-2-3-4-5-6-7-8-9 =12+10000000-2-4-5-6-7-8-9-1-2-3-4-5-6-7-8-9-4-1-1-1-1 = 10000012 – ( 2+4+5+6+7+8+9+1+2+3+4+5+6+7+8+9+4+1+1+1+1) = 10000012 – 94 = 9999908 Bình luận
Đá án:
20-20+12-2+2+3-4+2-1-1-1-1-1-1+10000000-2-3-4-5-6-7-8-9-1-2-3-4-5-6-7-8-9
20 – 20-2+2+3 -3
= 0+12-4+2-1-1-1-1-1-1+10000000-2-4-5-6-7-8-9-1-2-3-4-5-6-7-8-9
=12-4+2-1-1-1-1-1-1+10000000-2-4-5-6-7-8-9-1-2-3-4-5-6-7-8-9+2-1-1
=12-4-1-1-1-1+10000000-2-4-5-6-7-8-9-1-2-3-4-5-6-7-8-9
=12+10000000-2-4-5-6-7-8-9-1-2-3-4-5-6-7-8-9-4-1-1-1-1
=10000012-[2+4+5+6+7+8+9+1+2+3+4+5+6+7+8+9+4+1+1+1+1]
= 10000012 – 94
= 9999908
Chúc bạn học tốt!
Đáp án:
Giải thích các bước giải:
20-20+12-2+2+3-4+2-1-1-1-1-1-1+10000000-2-3-4-5-6-7-8-9-1-2-3-4-5-6-7-8-9
20 – 20 hết, -2 +2 hết, +3 -3 hết
= 0+12-4+2-1-1-1-1-1-1+10000000-2-4-5-6-7-8-9-1-2-3-4-5-6-7-8-9
=12-4+2-1-1-1-1-1-1+10000000-2-4-5-6-7-8-9-1-2-3-4-5-6-7-8-9
+2 – 1 -1 hết
=12-4-1-1-1-1+10000000-2-4-5-6-7-8-9-1-2-3-4-5-6-7-8-9
=12+10000000-2-4-5-6-7-8-9-1-2-3-4-5-6-7-8-9-4-1-1-1-1
= 10000012 – ( 2+4+5+6+7+8+9+1+2+3+4+5+6+7+8+9+4+1+1+1+1)
= 10000012 – 94
= 9999908