36/12x81/90;0,5=?
Tính nhanh :
43 x 37+43x39+57x7612x58+24x2145x81+67-12x8143x27+57x50+43x2345x97+90+55x9994x97+96x23a = 7600
b = 1200
c = 2740
d = 5000
e = 9900
g = 11326
k minh nha
chuc ban hoc tot
26 +43 - 57 + 86 -61+40
72:9x5+41+65+12x81=
-[-(36)+25-(-90]-[-36-25]
Trả lời :
- [ - ( 36 ) + 25 - ( -90 )] - [ -36 - 25 ]
=36 - 25 - 90 + 36 + 25
= 90
hok tốt!
-[-(36)+25-(-90]-[-36-25]=-140
# hok tốt #
Ta có : - [ -(36) + 25 - (-90)] - [ (-36) -25 ]
= -[ (-36) + 25 + 90 ] - ( -61)
= -[ (-11) + 90 ] - ( - 61)
= ( - 79) - ( -61)
=-18
tính nhanh
36/47 + -92/29 - 36/47 + 90/29
\(\frac{36}{47}-\frac{92}{29}-\frac{36}{47}+\frac{90}{29}\)
\(=\left(\frac{36}{47}-\frac{36}{47}\right)+\left(\frac{-92}{29}+\frac{90}{29}\right)\)
\(=0+\frac{-2}{29}\)
\(=\frac{-2}{29}\)
ƯCLN(90; 63; 36)
\(90=2.3^2.5\\ 63=3^2.7\\ 36=2^2.3^2\)
\(=>UCLN\left(90;63;36\right)=3^2=9\)
6x + 36 = 90 + 42
6x + 36 = 90 + 42
6x + 36 = 132
6x = 132 - 36
6x = 96
x = 16
6x + 36 = 90 + 42
6x + 36 = 132
6x = 132 - 36
6x = 96
x = 96 : 6
x = 16
6x + 36 = 90 + 42
6x + 36 = 132
6x = 132 - 36
6x = 96
x = 16
ai k mik mik k lại
x + 90 =36-2x
\(x+2x\)=36 - 90
<=>3\(x\)= -54
<=> \(x\)=-18
: tí
Câu 1: tính
a) 19.64+36.19
b) 150-[102-(14-11)2.20070
c) 22.3-(110+8):32
d) 59-[90-(17-8)2].14514
e) 72-36:3
nh
a) 19.64+36.19
b) 150-[102-(14-11)2.20070
c) 22.3-(110+8):32
d) 59-[90-(17-8)2].14514
e) 72-36:32
ƯCLN 36 và 90
Ta có: \(36=2^2\cdot3^2\)
\(90=2\cdot3^2\cdot5\)
Do đó: \(UCLN\left(36;90\right)=2\cdot3^2=18\)
Vậy: UCLN(36;90)=18
Ư(36) ={ 1; 36; 18; 2; 3; 12; 4; 9; 6 }
Ư(90) = { 1; 90; 3; 30; 2; 45; 18; 5; 15; 6; 9; 10 }
ƯC ={ 1; 2; 3; 6; 18; 9 }
ƯCLN : 18