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

Toán Lớp 6: A , 5. ( 2.x – 2 ) – 13 = 27 B , 35 – 2 . 1 mũ 222 + 3.7.7 mũ 2

Home/ Toán Lớp 6: A , 5. ( 2.x – 2 ) – 13 = 27 B , 35 – 2 . 1 mũ 222 + 3.7.7 mũ 2

Toán Lớp 6: A , 5. ( 2.x – 2 ) – 13 = 27 B , 35 – 2 . 1 mũ 222 + 3.7.7 mũ 2

Tháng Bảy 20, 2022 Toán học 2 Comments 0 views

Toán Lớp 6: A , 5. ( 2.x – 2 ) – 13 = 27
B , 35 – 2 . 1 mũ 222 + 3.7.7 mũ 2

Comments ( 2 )

  1. ngocle44
    ngocle44
    20 Tháng Bảy, 2022 at 10:13 sáng
    Reply
    #laviken#
    5(2x-2)-13=27
    =>5(2x-1)=40
    =>2x-2=8
    =>2x=10
    =>x=5
    ———————–
    35-2.1^222+3.7.7^2
    =35-2+21.49
    =33+21.49
    =54.49
    =2646
     

  2. kimoanh34
    kimoanh34
    20 Tháng Bảy, 2022 at 10:13 sáng
    Reply
    a) 5 .(2x – 2) – 13 = 27
    5 . (2x – 2) = 27 + 13
    5 . (2x – 2) = 40
    2x – 2 = 40 : 5
    2x – 2 = 8
    2x = 8 + 2
    2x = 10
    x = 10 : 2 = 5
    b) 35 – 2 . 1^222 + 3 . 7 . 7^2  
    = 35 – 2 + 21 . 49
    = 33 + 21 . 49
    = 54 . 49
    = 2646

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

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