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222-9+11+12:2*14+14 = ? ( )

Toán Lớp 7: [(155- $\frac{10}{7}$ -$\frac{5}{11}$ +$\frac{5}{23}$)] ÷ [(402-$\frac{26}{7}$ -$\frac{13}{11}$+$\frac{13}{23}$)]+[($\frac{3}{5}$+$\fra

Tháng Chín 8, 2022 Toán học 2 Comments 0 views

Toán Lớp 7: [(155- $\frac{10}{7}$ -$\frac{5}{11}$ +$\frac{5}{23}$)] ÷ [(402-$\frac{26}{7}$ -$\frac{13}{11}$+$\frac{13}{23}$)]+[($\frac{3}{5}$+$\frac{3}{13}$-0,9) ÷($\frac{7}{91}$+0,2-$\frac{3}{10}$)]

Comments ( 2 )

  1. thucquyenlan
    thucquyenlan
    8 Tháng Chín, 2022 at 9:59 chiều
    Reply
    Giải đáp:
    [155- 10/7-5/11 +5/23]/[402-26/7 -13/11+13/23]+(3/5+3/13-0,9)/(7/91+0,2-3/10)
    = (5(31- 2/7-1/11 +1/23)]/[13(31-2/7 -1/11+1/23)]+(3/5+3/13-9/10)/(1/13+1/5-3/10)
    = 5/13+(3(1/5+1/13-3/10))/(1/13+1/5-3/10)
    = 5/13+3
    = 44/13
     

  2. truonganhthi
    truonganhthi
    8 Tháng Chín, 2022 at 9:59 chiều
    Reply
    [( 155 – 10/7 – 5/11 + 5/23)] : [( 402 – 26/7 – 13/11 + 13/23)] + [(3/5 + 3/13 – 0,9) : (7/91 + 0,2 – 3/10)]
    = (1075/7 – 5/11 + 5/23)] : [(2788/7 – 13/11 + 13/23)] + [(54/65 – 0,9) : (18/65 – 3/10)]
    = (11790/77 + 5/23)] : [(30577/77 + 13/23)] + [(-9)/130 : (-3/130)]
    = 153,3342744 : 397,6691135 + 3
    = 0,385582559 + 3
    = 3,385582559
    @ Rin gửi bn
     

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222-9+11+12:2*14+14 = ? ( )

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