X x 16 = 936 + x x 12
Tìm X:
X x 12 = 936+Xx8
X x 12 = 936 + X x 8
X x 12 - X x 8 = 936
X x ( 12 - 8 ) = 936
X x 4 = 936
X = 936 : 4
X = 234
Ta có:
X x 12 = 936 + X x 8
=> X x 12 - X x 8 = 936
=> X x 4 = 936
=> X = 936 : 4 = 234
Chúc bạn học tốt !!! ^^
X x 12 = 936 + X x 8
X x 12 - X x 8 = 936
X x ( 12 - 8 ) = 936
X x 4 = 936
X = 936 : 4
X = 234
Vậy X = 234
a) X : 2 x 3 + X : 4 x 6 + X x 2 + X=18
b) X : 3 x 6 + X : 4 x 12 + X x 4 =27
c) ( X + 3 ) + (X + 6 ) +..................+( X + 936 ) + ( X + 939) =148049
d) 1+2+3+4+............+X=4095
a) X : 2 x 3 + X : 4 x 6 + X x 2 + X = 18
X x 0,5 x 3 + X x 0,25 x 6 + X x 2 + X x 1 = 18
X x 1,5 + X x 1,5 + X x 2 + X x 1 = 18
X x (1,5 + 1,5 + 2 + 1) = 18
X x 6 = 18
X = 18 : 6
X = 3
b, \(x\) : 3 x 6 + \(x\) : 4 x 12 + \(x\) x 4 = 27
\(x\) x 2 + \(x\) x 3 + \(x\) x 4 =27
\(x\) x (2 + 3 + 4) = 27
\(x\) x 9 = 27
\(x\) = 3
1 + 2 + 3 + 4 + .... + \(x\) = 4095
(\(x\) + 1)\(\times\) \(x\) : 2 = 4095
(\(x\) + 1) \(\times\) \(x\) = 4095 x 2
(\(x\) + 1) x \(x\) = 8190
(\(x\) + 1) x \(x\) = 90 x 91
\(x\) = 90
1. Tìm x:
a) 936+( 49:x )=943 b) 26+( x x 12 )=98
a) 936 + ( 49 : x ) = 943
49 : x = 943 - 936
49 : x = 7
x = 49 : 7
x = 7
b) 26 + ( x . 12 ) = 98
x . 12 = 98 - 26
x . 12 = 72
x = 72 : 12
x = 6
a) 936 + (49:x)=943 b) 26 + (X x 12 )=98
=>49:x=943-936=7 =>X x 12 =72
=>x=49:7 =>X=72:12=6
x=7
936 + (49 : x) = 943
49 : x = 943 - 936
49 : x = 7
x = 49 : 7
x = 7
\(26+\left(x\times12\right)=98\)
\(x\times12=98-26\)
\(x\times12=72\)
\(x=72:12\)
\(x=6\)
c) (7x + x – 28) :100 – 38 = 9.
d) 936 – (4x + 5x ) = 900
e) 280 + 78 : (135 – x :7) =286
f) x – 18 :3 = 16 + 16 : 23.
g) (3x – 10) : 10 = 20.
h) (3x – 24 ).73= 2.74
i) 123 – 5.( x + 4) = 38.
k) [(6x – 72) :2 – 84].28 = 5628.
m) 2x – 138 = 23.32.
n) [(10 - x).2 + 7]:3 -2 = 3.
Trình bày kết quả rõ ràng nha cảm ơn mọi người rất nhiều❤❤❤
c) (7x + x – 28) :100 – 38 = 9
<=> 8x - 28 = 4700
<=> x = 591
d) 936 – (4x + 5x ) = 900
<=> 9x = 36
<=> x = 4
Đặt tính rồi tính
a. 14 754 + 23 680
b. 15 840 – 8795
c. 12 936 x 3;
d. 68325 : 8
Tìm x y biết x/5=y/2 và x^3-y^3=936
936+(49:x)=943
936 + ( 49 : x ) = 943
49 : x = 943 - 936
49 : x = 7
x = 49 : 7
x = 7
936+(49:x)=943
49 : x = 943 -936
49 : x = 7
x = 49 : 7
x = 7
49 : x = 943 - 936
49 : x = 7
x = 49 : 7
x = 7
936 - ( x + 24 ) = 72
5 . (x + 35 ) = 515
(158 - x ) :7 = 20
936 - ( x + 24 ) = 72
936 - x - 24 = 72
912 - x=72
x=840
5 . (x + 35 ) = 515
x+35=515:5
x+35=103
x=68
(158 - x ) :7 = 20
158 - x=20x7
158 - x=140
x=18
936-(x+24)=72
X+24=936-72
X+24=864
X=864-24
X=840
5.(x+35)=515
X+35=515:5
X+35=103
X=103-35
X=68
(158-x):7=20
158-x=20.7
158-x=140
X=158-140=18
K biết đúng hay sai hì hì, mong thông cảm ạ*cúi đầu*
a) 936 - ( x + 24 ) = 72
x + 24 = 936 - 72
x + 24 = 864
x = 864 - 24
x = 840
b) 5 . ( x + 35 ) = 515
x + 35 = 515 : 5
x + 35 = 103
x = 103 - 35
x = 68
c) ( 158 - x ) : 7 = 20
158 - x = 20 . 7
150 - x = 140
x = 158 - 140
x = 18
{x+1976} : 9 = 936
`(x+1976) : 9 = 936`
`=> x+ 1976 = 936 xx 9`
`=> x+ 1976 = 8424`
`=>x=8424 -1976`
`=>x=6448`
`(x+1976):9=936`
`=>x+1976=936xx9`
`=>x+1976=8424`
`=>x=8424-1976`
`=>x=6448`
(x+1976):9=936
(x+1976) =936*9
x+1976 =8424
x =8424-1976
x 6448
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