Tìm x
5.x -36:18=13 (5.x-36):18=13
tìm x biết (5.x-36):18=13
(5x-36):18=13
5x-36=13.18
5x-36=234
5x=234+36
5x=270
x=270:5
x=54
(5xX-36):18=13
5xX-36 =13x18
5xX-36 =234
5xX =234+36
5xX =270
X =270:5
X =54
2. Tìm x biết : a) 13.(25-4x)=13 b) (2x-4).15=0 c) (x-35)-115=0 d) x-36:18=12 e) (x-36):18=12
a: =>25-4x=1
=>4x=24
hay x=6
b: =>2x-4=0
hay x=2
c: =>x-35=115
hay x=150
d: =>x-2=12
hay x=14
e: =>x-36=216
hay x=252
Tìm X là số tự nhiên biết: 512 - 12 x (27- X ) + 18 x (13 + 5) = (36 + 25 ) x (36 - 25 )
Giúp tớ với
x=94 nhé bạn còn cách trình bày thì bạn tự vận óc làm nhé
tính:
a) 2.17.12+4.6.21+8.3.62
b) 37.24+37.76+63.79+63.21
c) 25.(x-75)=25
d) (5.x-36):18=13
e) 5.x-36:18=13
câu b là:
=37.(24+76)+63.(79+21)
=37.100+63.100
=100.(37+63)
=100.100
=10000
7/12+5/18+5/36<x<20/13+44/13+27/13
7/12+5/18+5/36<x<20/13+44/13+27/13
1<x<7
x=2;3;4;5;6
Tim x :
a) 5x - 36 : 18 = 13
b) ( 5x - 36 ) : 18 = 13
A) \(y=5X-\frac{18.2}{18}=135X-2=13x=3\)
B)\(y=\frac{5x-36}{18}=13\frac{5x}{18}-2=13\frac{5x}{18}=15\frac{x}{18}=3x=54\)
a, 5x-36:18=13
5x-2=13
x=5-2
x=3
b,(5x-36):18=13
5x-36=13x18
5x-36=234
5x=234+36
5x=270
x=270:5
x=54
cho mình nhé:):):):):):):)@@@@@@@#######
Tính nhanh :
( 36 x 15 x 169 ) : ( 5 x 18 x 13)
(36 x 15 x 169):(5 x 18 x 13)
= (18 x 2 x 3 x 5 x 13 x 13):(5 x 18 x 13)
= 2x3x13x(5 x 18 x 13):(5 x 18 x 13)
= 2 x 3 x 13
= 78
13/36-5/18-x=-11/9
13/36-5/18-x=-11/9
5/18-x=13/36-(-11/9)
5/18-x=19/12
x=5/18-19/12
x= -47/36
vậy x = -47/36
\(\frac{13}{36}-\frac{5}{18}-x=\frac{-11}{9}\)
\(\Leftrightarrow\)\(\frac{13}{36}-\frac{10}{36}-x=\frac{-44}{36}\)
\(\Leftrightarrow\frac{3}{36}-x=\frac{-44}{36}\)
\(\Leftrightarrow x=\frac{3}{36}-\frac{-44}{36}\)
\(\Leftrightarrow x=\frac{47}{36}\)
chắc là vậy
\(\frac{13}{36}\)- \(\frac{5}{18}\)- x = \(\frac{-11}{9}\)
\(\Leftrightarrow\)13 - 5.2-x=-11 . 4
\(\Leftrightarrow\)x= -44 -13 +10
\(\Leftrightarrow\)x= -47
Tìm số tự nhiên x, biết:
a) 5x – 36 : 18 = 13
a) 5x – 36 : 18 = 13
5x – 2 = 13
5x = 13+2
5x = 15
x = 15 :5
x = 3
Vậy x = 3