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

Toán Lớp 6: X+23=-5 ,x+23=50,x+(-20)=30,x+(-12)=-45,x+(-34)=6,(x-5)-17=-20,29+(-5)=28,9-x=10,12-x=-24,34-x=17 489-x=-11,(-56)-x=-70,(-70 )-x=8,18-(

Tháng Mười Hai 11, 2022 Toán học 1 Comment 0 views

Toán Lớp 6: X+23=-5 ,x+23=50,x+(-20)=30,x+(-12)=-45,x+(-34)=6,(x-5)-17=-20,29+(-5)=28,9-x=10,12-x=-24,34-x=17
489-x=-11,(-56)-x=-70,(-70 )-x=8,18-(2-x)=7,
,34-(x+12)=9,(x+14)-34=-7,(12-x)+8=-10

Comments ( 1 )

  1. phuongthaongoc
    phuongthaongoc
    11 Tháng Mười Hai, 2022 at 4:49 sáng
    Reply
    $a) x+23=-5$
    $⇒ x= (-5)-23$
    $⇒ x=  -28$
    $Vậy$ $x=-28$
    $b) x+23=50$
    $⇒ x=50-23$
    $⇒ x=27$
    $Vậy$ $x=27$
    $c) x+(-20)=30$
    $⇒ x=30-(-20)$
    $⇒ x=50$
    $Vậy$ $x=50$
    $d) x+(-12)=-45$
    $⇒ x=(-45)-(-12)$
    $⇒ x=-33$
    $Vậy$ $x=-33$
    $e) x+(-34)=6$
    $⇒ x=6-(-34)$
    $⇒ x=40$
    $Vậy$ $x=40$
    $f) (x-5)-17=-20$
    $⇒ x-5= (-20)+17$
    $⇒ x-5=-3$
    $⇒ x=(-3)+5$
    $⇒ x=2$
    $Vậy$ $x=2$
    $h) 29+(x-5)=28$
    $⇒ x-5=28-29$
    $⇒ x-5=(-1)$
    $⇒ x=(-1)+5$
    $⇒ x=4$
    $Vậy$ $x=4$
    $i) 9-x=10$
    $⇒ x=9-10$
    $⇒ x= -1$
    $Vậy$ $x=-1$
    $j) 12-x=-24$
    $⇒ x=12-(-24)$
    $⇒ x=36$
    $Vậy$ $x=36$
    $k) 34-x=17$
    $⇒ x=34-17$
    $⇒ x=17$
    $Vậy$ $x=17$
    $ l) 489-x=-11$
    $⇒ x=489-(-11)$
    $⇒ x= 500$
    $Vậy$ $x=500$
    $m) (-56)-x=(-70)$
    $⇒ x= (-56)-(-70)$
    $⇒ x= 14$
    $Vậy x=14$
    $n) (-70)-x=8$
    $⇒ x=(-70)-8$
    $⇒ x= -78$
    $Vậy$ $x=-78$
    $o) 18-(2-x)=7$
    $⇒ 2-x=18-7$
    $⇒ 2-x=11$
    $⇒ x=2-11$
    $⇒ x=-9$
    $Vậy$ $x=-9$
    $p) 34-(x+12)=9$
    $⇒ x+12=34-9$
    $⇒ x+12=25$
    $⇒ x=25-12$
    $⇒ x=13$
    $Vậy$ $x=13$
    $q) (x+14)-34=-7$
    $⇒ x+14= (-7)+34$
    $⇒ x+14=27$
    $⇒ x=27-14$
    $⇒ x=13$
    $vậy$ $x=13$
    $r) (12-x)+8=-10$
    $⇒ 12-x=(-10)-8$
    $⇒ 12-x=-18$
    $⇒ x=12-(-18)$
    $⇒ x=30$
    $Vậy$ $x=30$
    $@Festivals$
     
     

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

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