x - 280 : 35 = 5 . 54
Tính nhanh :
a . 29 x 64 + 116 x 34
b . 136 x 68 + 16 x 272
Tim x
c 180 - 23 x ( x - 5 )
d ( x - 280 ) x 35 = 54
g x - 280 : 35 = 54
e 12 x ( x - 6 ) : 4 = 72
a ; 29 x 64 +116 x 34
= 29 x 2 x 32 + 116 : 2 x 2 x 34
= 58 x 32 + 58 x 68
= 58 ( 32 + 68)
= 58 x 100
= 5800
b, 136 x 68 + 16 x 272
= 136 x 68 + 16 x 2 x 136
= 136 x 68 + 136 x 32
= 136 ( 68 + 32)
= 136 x 100
= 13600
Tìm x :
c 180 - 23 x ( x - 5 )
d ( x - 280 ) x 35 = 54
g x - 280 : 35 = 54
e 12 x ( x - 6 ) : 4 = 72
d) => x-280 = 54:35=54/35
=> x = 54/35 +280=9854/35
g) x-8 = 54
=> x = 54+8 = 66
e) x-6 = 72 .4 :12=24
=> x = 24+6=30
(x – 280): 35 =55:5
(x-280):35=11
x-280 =35x11
x-280 =385
x =385+280
x =665
\(\left(x-280\right):35=11\)
\(x-280=385\)
\(x=665\)
Tìm x, biết:
a) x - 280: 35 - 5.54;
b) ( x - 120) : 35 = 5;
c) (x + 100). 4 = 800;
d) x . 5 + 10.9 = 990
a) x = 278.
b) x = 295.
c) x = 100.
d) x = 180.
Tìm x, biết:
a) x - 280: 35 - 5.54;
b) ( x - 120) : 35 = 5
c) (x + 100). 4 = 800;
d) x . 5 + 10.9 = 990
a) x = 278.
b) x = 295.
c) x = 100.
d) x = 180
Tìm x biết:
a) x - 280 : 35 = 5.54
b) (x - 280) : 35 = 56 : 5
c) x : 15 + 42 = 13 + 25.8
d) (x - 128 + 20) : 192 = 0
e) 460 + 85.4 = (x + 200).4
f) x + 5.2 - ( 32 + 16.3 : 16 - 15) = 0
GIÚP MÌNH NHA!
(x-280) :35 =56 :5
( x-280) :35=56:5
a)x-280:35=5.54 b)(x-280):35=10 c)2448:[119-(x-6)]=24