tim x:
5x+3 -13=612
x+3/4 bằng 5/6
12-x bằng 3/5
x-3/5 bằng 5/7
x nhân 3 bằng 7/9
x chia 12/5 bằng 7/8
13 chia x bằng 5/3
đầy đủ cách làm ???
a: =>x=5/6-3/4=10/12-9/12=1/12
b: =>x=12-3/5=57/5
c: =>x=3/5+5/7=21/35+25/35=46/35
d: =>x=7/9:3=7/27
e: =>x=7/8x12/5=84/40=21/10
f: =>x=13:5/3=39/5
tim so tu nhien biet : 5x-1 -13 = 612
5 ban tra loi nhanh nhat minh se cho TICK
5x - 1 = 612 + 13
5x - 1 = 615
5x - 1 = 54
=> x - 1 = 4
x = 4 + 1
x = 5
HT
ban oi 612 + 13 thi = 625 chu
Tìm x
5x+3 -13=612
5x+3 -13=612
5x+3 =612+13
5x+3 =625
5x+3 =54
=>x+3=4
x=4-3
x=1
5x+3-13=612
=> 5x+3=612+13
=> 5x+3=625
=> 5x+3=54
=> x+3=4
=> x=4-3
=> x=1
Tim x
10-2.x=25-3x
4.x-(3+5x)=14
|5x-12| < hoặc = 13
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:):):):):):):)@@@@@@@#######
Tim x thuoc Z
a.\2x-5\=13
b.\7x+3\=66
c.\5x-2\<=13
a) => 2x-5 = 13
2x-5 = -13
=> 2x = 13+5 = 18
2x = -13+5 = -8
=> x= -18:2 = -9
x= -8:2 = -4
b) 7x+3 = 66
=> 7x+3 = 66
7x+3 = -66
7x = 66-3 = 33
7x = -66 - 3 = -69
=> x= 33:7 = ????
x= -69:7 = ???? sai đề hay sao ý
c) => 5x-2 = 13
=> 5x -2 = -13
5x = 13+2 = 15
5x = -13+2 = -11
=> x= 15:5 = 3
x= -11: 5 = -2,2
duyệt đi
ý câu b) sai chỗ này: 7x = 66-3 = 63
7x = -66 - 3 = -69
=> x= 63:7 = 9
x= -69 :7 = -9,857.........
bài lạ duyệt đi
tim x biet a) |3x-2|+5x=4x-10
b)3+ |2x+5|>13
Tìm x E N biết:
a/(x-17) : 21-3=7
b/5^x-1 -13=612
a) ( x - 17 ) : 21 - 3 = 7
( x - 17 ) : 21 = 7 + 3
( x - 17 ) : 21 = 10
x - 17 = 10 x 21
x - 17 = 210
x = 210 + 17
x = 227
a) (x - 17) : 21 - 3 = 7
(x - 17) : 21 = 7 + 3
(x - 17) : 21 = 10
x - 17 = 10 x 21
x - 17 = 210
x = 210 + 17
x = 227
Vậy x = 227
Câu b mk ko hiểu
tìm x
5 mũ x+3 - 13 = 612
ai nhanh mình tick , cần lắmmmmm
5x+3 - 13 = 612
<=> 5x+3 = 625
<=> 5x+3 = 54
<=> x + 3 = 4
<=> x = 1
\(5^x+3-13=162\)
\(\Rightarrow5^x+3=162+13\)
\(\Rightarrow5^x+3=175\)
\(\Rightarrow5^x=175-3\)
\(\Rightarrow5^x=172\)
\(\Rightarrow x\in\varnothing\)
5x+3 - 13 = 612
5x+3 = 625
5x+3 = 54
=> x + 3 = 4
x = 1