Toán Lớp 6: A = ( 7 – 1/5 +1/3 ) – ( 6 +9/5 +4/3 )
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Toán Lớp 6: A = ( 7 – 1/5 +1/3 ) – ( 6 +9/5 +4/3 )
Comments ( 2 )
Giải đáp:
A = -2
Lời giải và giải thích chi tiết:
A = (7 – 1/5 + 1/3 ) – (6 + 9/5 + 4/3 )
A = 7 – 1/5 + 1/3 – 6 – 9/5 – 4/3
A = 7 – 6 – 1/5 – 9/5 + 1/3 – 4/3
A = (7 – 6) – (1/5 + 9/5) + (1/3 – 4/3)
A = 1 – 2 – 1
A = -2
A = (7 – 1/5 + 1/3) – (6 + 9/5 + 4/3)
= 7 – 1/5 + 1/3 – 6 – 9/5 – 4/3
= (7 – 6) – (1/5 + 9/5) + (1/3 – 4/3)
= 1 – 10/5 + (-3)/3
= 1 – 2 + (-1)
= [1 + (-1)] – 2
= 0 – 2
= -2
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