A=[7- 3/4 + 1/3] – [ 6 + 5/4 – 4/3 ] – [ 5 – 7/4 + 5/3] Khó quá, giúp mình vớii 04/12/2021 Bởi Samantha A=[7- 3/4 + 1/3] – [ 6 + 5/4 – 4/3 ] – [ 5 – 7/4 + 5/3] Khó quá, giúp mình vớii
A = (7 – 3/4 + 1/3) – (6 + 5/4 – 4/3) – (5 – 7/4 + 5/3) = 7 – 3/4 + 1/3 – 6 – 5/4 + 4/3 – 5 + 7/4 – 5/3 = (7 – 6 – 5) + (-3/4 – 5/4 + 7/4) + (1/3 + 4/3 – 5/3) = -4 + (-1/4) + 0 = -4 – 1/4 = -17/4 Vậy A = -17/4 Bình luận
A = (7 – 3/4 + 1/3) – (6 + 5/4 – 4/3) – (5 – 7/4 + 5/3)
= 7 – 3/4 + 1/3 – 6 – 5/4 + 4/3 – 5 + 7/4 – 5/3
= (7 – 6 – 5) + (-3/4 – 5/4 + 7/4) + (1/3 + 4/3 – 5/3)
= -4 + (-1/4) + 0
= -4 – 1/4
= -17/4
Vậy A = -17/4
Đáp án:
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