a, X x 186-Z x 86=3400
X x (186-86) =3400
X x 100=3400
X= 3400: 100
X= 34
b, X x 75+57 x X =32604
X x (75+57)=32604
X x 132=32604
X= 32604 : 132
X = 247
c, 216: X +34: X =10
(216+34) : X=10
250 : X =10
X= 250:10
X= 25
d, 2125:X -125 :X=100
(2125-125) :X= 100
2000: X=100
X= 2000:100
X= 20
a) \(x\times186-x\times86=3400\)
\(x\times\left(186-86\right)=3400\)
\(x\times100=3400\)
\(x=3400:100\)
\(x=34\)
b) \(x\times75+57\times x=32604\)
\(x\times\left(75+57\right)=32604\)
\(x\times132=32604\)
\(x=32604:132\)
\(x=247\)
c) 216 : x + 34 : x = 10
(216 + 34) : x = 10
250 : x = 10
x = 250 : 10
x = 25
d) 2125 : x - 125 : x = 100
(2125 - 125) : x = 100
2000 : x = 100
x = 2000 : 100
x = 20
a, X x (186 - 86 ) =3400
X x100 =3400
X =3400 : 100
X = 34
a. Xx(186-86)=3400
100xX==3400
X=34
b.Xx(75+57)=32604
132xX=32604
X=247
c.(216+34):X=10
250:x=10
X=25
d.(2125-125):x=100
2000:X=100
X=20
a, X x 186 - X x 86 = 3400 b, X x 75 + 57 x X = 32604 c, 216 : X + 34 : X = 10
X x (186 - 86) = 3400 X x (75 + 57) = 32604 (216 + 34) : X = 10
X x 100 = 3400 X x 132 = 32604 250 : X = 10
X = 3400 : 100 X = 32604 : 132 X = 250 : 10
X = 34 X = 247 X = 25
d, 2125 : X - 125 : X = 100
(2125 - 125) : X = 100
2000 : X = 100
X = 2000 : 100
X = 20
a,X x (186 - 86)=3400
X x 100 =3400 b, X x (75 + 57) =32604
X =3400 : 100 X x 132 =32604
X = 34 X =32604 : 132
c,(216 + 34) : X=10 X =247
250 : X = 10 Xem tới đây chắc bạn biết làm rồi .Xin cáo hết
X =250 : 10
X= 25
