1 , 11/4x-2/5-8/5×11/4+-6/5:4/11
2 , 5×27^3×4^5/6^5
3 , 5-5/3-5/9-5/27gạch ngang8-8/3-8/9-8/27
1 , 11/4x-2/5-8/5×11/4+-6/5:4/11 2 , 5×27^3×4^5/6^5 3 , 5-5/3-5/9-5/27gạch ngang8-8/3-8/9-8/27
By Abigail
By Abigail
1 , 11/4x-2/5-8/5×11/4+-6/5:4/11
2 , 5×27^3×4^5/6^5
3 , 5-5/3-5/9-5/27gạch ngang8-8/3-8/9-8/27
1, 11/4 . -2/5 – 8/5 . 11/4 + -6/5 : 4/11
=11/4 . -2/5 – 8/5 . 11/4 + -6/5 . 11/4
=11/4.(-2/5 – 8/5 + -6/5)
=11/4.(-10/5 + -6/5)
=11/4 . -16/5
= -44/5
2, 5 . 27^3 . 4^5/6^5
= 5 . (3^3)^3 . (2^2)^5/(2.3)^5
= 5 . 3^9 . 2^10/2^5 . 3^5
= 5 . 3^4 . 2^5=5 . 81 . 32
= 160 .81=12960
3, 5 – 5/3 – 5/9 – 5/27
___________________________
8 – 8/3 – 8/9 – 8/27
5.(1 – 1/3 – 1/9 – 1/27)
= ___________________________
8.(1 – 1/3 – 1/9 – 1/27)
5
= _______
8
Đáp án:
a) -44/5
b) 12960
c) 5/8
Giải thích các bước giải:
Chúc bn hok tốt !