Tìm x biết:
a) x : ( 111 - 99 ) = 17 x 5 b) ( 509 + 355 ) : x = 840 : 35
c) x : 125 = 75 dư 5 d) 890 : x = 35 dư 15
e) 648 - x x 34 = 444 f) 1482 : x + 23 = 80
Tìm x
A) x : (111 - 99 ) = 17 X 5
b) (509 + 335) : x = 840 : 35
c) (x+1) + (x + 2) + ( x + 3) +...+ ( x + 28) +462
d) 890 : x = 35 du 15
\(a,x:\left(111-99\right)=17\cdot5\\ \Leftrightarrow x:12=85\\ \Leftrightarrow x=1020\\ b,\left(509+335\right):x=840:35\\ \Leftrightarrow844:x=24\\ \Leftrightarrow x=\dfrac{211}{6}\\ c,\left(x+1\right)+\left(x+2\right)+...+\left(x+28\right)=462\\ \Leftrightarrow28x+406=462\\ \Leftrightarrow28x=56\\ \Leftrightarrow x=2\)
d, 890 : x = 35 dư 15
\(\Rightarrow35x+15=890\\ \Leftrightarrow35x=875\\ \Leftrightarrow x=25\)
a)X:(111-99)=17x5
b)(509 + 355):X =840 :35
c)(X+1)+(X+2)+(X+3)+..(X+28) =462
d)890:X =35 dư 15
rut gon cac phân số
12/36
75/300
121/1111
1313/1717
303/3003
1515/2424
\(\frac{12}{36}=\frac{1}{3}\) ; \(\frac{75}{300}=\frac{1}{4}\) ; \(\frac{1313}{1717}=\frac{13}{17}\) ; \(\frac{1515}{2424}=\frac{15}{24}\); \(\frac{121}{1111}=\frac{11}{101}\) \(\frac{303}{3003}=\frac{101}{1001}\)
a,X=1020
b,X=20736
c,d, tự làm
\(\frac{1}{3};\frac{1}{4};\frac{11}{101};\frac{13}{17};\frac{101}{1001};\frac{5}{8}\)
a) ( 509 + 355 ) : x = 840 : 35
b) 890 : x = 35 dư 15
a) ( 509 + 355 ) : x = 840 : 35
864 : x = 24
x = 864 : 24
x = 36
b) 890 : x = 35 dư 15
=> 890 : x - 15 = 35
=> 890 : x = 35 + 15
=> 890 : x = 50
=> x = 17,8
A) ( 509 + 355 ): x = 840 : 35
= 864 : x = 24
x = 864 : 24
x = 36
B) 890 : x = 35 dư 15
x = 890 : 35
x = 25,428
a) 864 : x = 24
x = 864 : 24
x = 36
b) 890 : x = 35 du 15
=>890 : x - 15 = 35
890 : x = 15 + 35 = 50
x = 890 : 50
x = 17.8
Tìm x :
a. 890 : x = 35 dư 15
b. 648 – 34 . x = 444
c. 1482 : x + 23 = 80
a, 890:x=35 dư 15
=> 890=35x+15
890-15=35x
875=35x
875:35=x
x=25
b, 648-34x=444
34x=648-444
34x=204
x=204:34
x=6
c, 1482:x+23=80
1482:x=80-23
1482:x=57
x=1482:57
x=26
Tìm x biết:
a) 890 : x = 35 dư 5
b) 648 - 34 . x = 444
c) 1482 : x + 23 = 80
Ai nhanh và đúng cho 1 tick
a) 890:x=35 dư 15
X= ( 890-15) :35
X = 875 : 35
X= 35
b) 648-34. x= 444
34 .x = 648-444
34.x = 204
x = 204:34
x= 6
c) 1482:x+23= 80
1482:x= 80-23
1482: x= 57
x= 1482 : 57
x = 26
a, 890:x=35(dư 5)
=>x=(890-5):35
=>x=885:35
=>x=177/7
b, 648-34.x=444
=>34.x=648-444
=>34.x=204
=>x=204:34
=>x=6
c, 1482:x+23=80
=>1482:x=80-23
=>1482:x=57
=>x=1482:57
=>x=26
Chúc bạn học giỏi nha!!!
K cho mik với nhé Dương NaNa Taurus
890:x= 35 dư 15
648-34*x =444
A,890÷x=5 dư 15
B,648-34× x=444
A) 890 : x = 15 dư 15
x = ( 890 - 15 ) : 15
x = 59
B) 648 - 34 x X = 444
x = ( 648 - 444 ) : 34
x = 6
a)890:x=35 dư 15
b)648-34.x=444
c)1482:x+23=80
tìm x biết
a,315+(125-x)=435
b,x:(111-99)=175
c,(509+355):x=840:35
các bạn giúp mình nhé!
a,315+(125-x)=435
125-x=435-315
125-x=120
x=125-120
x=5
a;315+(125-x)=435
125-x=435-315
125-x=120
x=125-120
x=5
b;x/(111-99)=175
x/12=175
x =175*12