Tìm x, biết rằng a,3.(10x) =111 b,3.(10 + x) =111 c,3+ (10.x) =111 d,3 + (10 + x ) =111

Question

Tìm x, biết rằng
a,3.(10x) =111
b,3.(10 + x) =111
c,3+ (10.x) =111
d,3 + (10 + x ) =111

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Bơ 4 years 2020-11-26T23:32:38+00:00 2 Answers 63 views 0

Answers ( )

  1. Edana
    0
    2020-11-26T23:34:01+00:00
    Reply

    a,3.(10x) =111 

    =>10x=37

    =>x=3,7

    b,3.(10 + x) =111

    =>10+x=37

    =>x=27

    c,3+ (10.x) =111

    =>10x=108

    =>x=10,8

    d,3 + (10 + x ) =111

    x+13=111

    =>x=98

    xin trhn

     

  2. Doris
    0
    2020-11-26T23:34:03+00:00
    Reply

    a) 3.(10x) =111 ⇔ (10.x) = 111 : 3

    ⇔ 10.x = 37 ⇔ x = 37 : 10 = 3,7

    b) 3.(10 + x) =111 ⇔ (10+ x) = 111: 3

    ⇔ (10 + x ) =37 ⇔ x = 37 – 10 = 27

    c) 3+ (10.x) =111 ⇔ (10.x ) = 111- 3

    ⇔ (10.x) = 108 ⇔ x = 108:10 =10,8

    d) 3 + (10 + x ) =111⇔ ( 10 + x ) = 111- 3

    ⇔ (10 + x ) = 108 ⇔ x = 108 – 10 = 98

    Nhóm bí ẩn ????

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