Toán Tìm x: a. 25536 : ( X – 2009 ) = 56 b. 132912 : ( X x 234 ) = 142 15/11/2021 By Caroline Tìm x: a. 25536 : ( X – 2009 ) = 56 b. 132912 : ( X x 234 ) = 142
a)25536 : ( X – 2009 ) = 56 =>(X-2009)=25536:56 =>X-2009=456 X=2465 b)132912 : ( X x 234 ) = 142 Xx234=132912:142 Xx234=936 X=4 Trả lời
a. 25536 : ( X – 2009 ) = 56 ( X – 2009 ) = 25536 : 56 X – 2009 = 456 X = 456 + 2009 X = 2465 b. 132912 : ( X x 234 ) = 142 ( X x 234 ) = 132912 : 142 X x 234 = 936 X = 936 : 234 X = 4 Trả lời
a)25536 : ( X – 2009 ) = 56
=>(X-2009)=25536:56
=>X-2009=456
X=2465
b)132912 : ( X x 234 ) = 142
Xx234=132912:142
Xx234=936
X=4
a. 25536 : ( X – 2009 ) = 56
( X – 2009 ) = 25536 : 56
X – 2009 = 456
X = 456 + 2009
X = 2465
b. 132912 : ( X x 234 ) = 142
( X x 234 ) = 132912 : 142
X x 234 = 936
X = 936 : 234
X = 4