Tìm x
x+3,5=4,32+2,68
x-8,6=12,95-6,55
tìm x
a) 58 . 10,6 - x . 17,3 - x = 530,62
b) 600,7- 102,5 : x + 14,52 : x = 592,4
C) (72,5 . 864 - 2 . 3,5 ) . (8,6 - x : 3,2)
Lời giải.
a.
$58.10,6-x.17,3-x=530,62$
$614,8-x.(17,3+1)=530,62$
$x.18,3=614,8-530,62=84,18$
$x=84,18:18,3=4,6$
b.
$600,7-102,5:x+14,52:x=592,4$
$600,7-(102,5-14,52):x=592,4$
$600,7-87,98:x=592,4$
$87,98:x=600,7-592,4=8,3$
$x=87,98:8,3=10,6$
c. Bạn xem lại đề.
4,32 x 3,5 + 6,74
Giải giúp mình bài tìm x này nha.
13,5-x+5,4=4,32
5,1-13,8+x=1,
0,16:(x:3,5)=2,8
a, 13,5-x+5,4=4,32
=>-x=4,32-13,5-5,4
=>-x=-14,58
=>x=14,58
b,5,1-13,8+x=1
=>x=1-5,1+13,8
=>x=9,7
c,0,16:(x:3,5)=2,8
=>x:3,5=0,16:2,8
=>x:3,5=2/35
=>x=2/35x3,5
=>x=0,2
Tìm x
A. x - 3,5 = 2,4 + 1,5
B. x + 6,14 = 27,8 - 8,6
C. 4,3 x x = 3,8 x 4,3
D. 7, 3 x x + 2,7 x x = 10
A. x - 3,5 = 2,4 + 1,5
x = 3,9 + 3,5
x = 7,4
B. x + 6,14 = 27,8 - 8,6
x = 19,2 - 6,14
x = 12,8
C. 4,3 x x = 3,8 x 4,3
x = 3,8 x 4,3 : 4,3
x = 3,8
D. 7, 3 x x + 2,7 x x = 10
x x ( 7, 3 + 2,7 ) = 10
x = 10 : 10
x = 1
Tìm x:
47,212 - (\(x\) - 18,045) = 6,55
\(x-18,045=47,212-6,55\)
\(x-18,045=40,662\)
\(x=40,662+18,045\)
\(x=58,707\)
\(47,212-\left(x-18,045\right)=6,55\)
\(x-18,045=47,212-6,55\)
\(x-18,045=40,662\)
\(x=40,662+18,045\)
\(x=58,707\)
a, x - 3,5=2,4+1,5 b, x+6,4=27,8-8,6
x - 3,5 = 2,4 + 1,5
x - 3,5 =3,9
x= 3,9 + 3,5
x=7,4
x + 6,4 = 27,8 - 8,
x + 6,4=27
x=27 - 6,4
x=21,4
k minh nha
Tìm \(x\) biết:
3,45 x \(x\) + 6,55 x \(x\) = 2,5
\(3,45\times x+6,55\times x=2,5\\ x\times\left(3,45+6,55\right)=2,5\\ x\times10=2,5\\ x=2,5:10\\ x=0,25\)
3,45 × x + 6,55 × x = 2,5
(3,45 + 6,55) × x = 2,5
10 × x = 2,5
x = 2,5 : 10
x = 0,25
Tìm x:
47,212-(x-18,045)=6,55
47,212-(x-18,045)=6,55
=>47,212-x+18,045=6,55
=>47,212-x=6,55-17,045
=>47,212-x=-10,495
=>x=47,212-(-10,495)
=>x=47,212+10,495=57,707
Vậy x=57,707
47,212 - ( x - 18,045 ) = 6,55
x - 18,045 = 47,212 - 6,55
x - 18,045 = 40,662
x = 40,662 + 18,045
x = 58,707
4,Tìm x
A, x/36 = 24/32 b,71 - (33 + x ) = 26
C, 3,5 × x + 1,5 × x = 10
5,
Tính bằng cách hợp lý :
A, 4,63 × 7,8 + 7,8 + 7,8 × 4,32
B, 35 × 34 + 35 × 86 + 65 × 75 + 65 × 45
4a) \(\frac{x}{36}=\frac{3}{4}\)
\(\Rightarrow\frac{x}{36}=\frac{27}{36}\)
\(\Rightarrow x=27\)
4b) 33 + x = 71 - 26
33 + x = 45
x = 45 - 33
x = 12
4c) x * (3,5 + 1,5) = 10
x * 5 = 10
x = 10 ; 5 = 2
4,
\(a,\frac{x}{36}=\frac{24}{32}\)
\(=>\frac{x}{36}=\frac{3}{4}=\frac{27}{36}\)
\(=>x=27\)
\(b,71-\left(33+x\right)=26\)
\(=>-\left(33+x\right)=26-71=-45\)
\(=>33+x=45\)
\(=>x=12\)
\(c,3,5\cdot x+1,5\cdot x=10\)
\(>x\cdot\left(3,5+1,5\right)=10\)
\(=>x\cdot5=10\)
\(=>x=2\)
. là nhân nha
4.
a) x/36 = 24/32
24/32 = 3/4 = 27/36
=> x = 27
b) 71 - ( 33 + x ) = 26
33 + x = 71 - 26
33 + x = 45
x = 45 - 33
x = 12
c) 3, 5 . X + 1, 5 . x = 10
x( 3, 5 + 1, 5 ) = 10
x . 5 = 10
x = 10 : 5
x = 2
5.
a) 4, 63 . 7, 8 + 7, 8 + 7, 8 . 4, 32
= 7, 8. ( 4, 63 + 4, 32 + 1 )
= 7, 8 . 9, 95
= 77, 61
b) 35 . 34 + 35 . 86 + 65 . 75 + 65 . 45
= 35( 34 + 86 ) + 65( 75 . 45 )
= 35 . 120 + 65 . 120
= 120 . ( 35 + 65 )
= 120 . 100
= 12 000