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

Toán Lớp 6: a) x + 37 = 50 b) 2.x – 3 = 11 c) (2 + x ) : 5 = 6 d) 2 + x : 5 = 6 e) (x –15) .15 = 0 f) 32 (x –10

Toán Lớp 6: a) x + 37 = 50 b) 2.x – 3 = 11
c) (2 + x ) : 5 = 6 d) 2 + x : 5 = 6
e) (x –15) .15 = 0 f) 32 (x –10 ) = 32
g) (x – 15 ) – 75 = 0 h) 575 – (6x +70) = 445
i) 315+(125-x) = 435 k) (x- 105) :21 =15
giúp e với

Comments ( 2 )

  1. Giải đáp+Lời giải và giải thích chi tiết:
     a) x+37=50
    =>x=50-37
    =>x=13
     Vậy x=13
     b) 2x-3=11
    =>2x=11+3
    =>2x=14
    =>x=14:2
    =>x=7
     Vậy x=7
     c) (2+x):5=6
    =>2+x=6.5
    =>2+x=30
    =>x=30-2
    =>x=28
     Vậy x=28
     d) 2+x:5=6
    =>x:5=6-2
    =>x:5=3
    =>x=3.5
    =>x=15
     Vậy x=15
     e) (x-15).15=0
    =>x-15=0:15
    =>x-15=0
    =>x=0+15
    =>x=15
     f) 32(x-10)=32
    =>x-10=32:32
    =>x-10=1
    =>x=1+10
    =>x=11
     Vậy x=11
     g) (x-15)-75=0
    =>x-15=0+75
    =>x-15=75
    =>x=75+15
    =>x=90
     Vậy x=90
     h) 575-(6x+70)=445
    =>6x+70=575-445
    =>6x+70=130
    =>6x=130-70
    =>6x=60
    =>x=60:6
    =>x=10
     Vậy x=10
     i) 315+(125-x)=435
    =>125-x=435-315
    =>125-x=120
    =>x=125-120
    =>x=5
     Vậy x=5
     k) (x-105):21=15
    =>x-105=15.21
    =>x-105=315
    =>x=315+105
    =>x=420
     Vậy x=420
     

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

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