\(22-2\left(x-9\right)=4^5:4^4\\ \Leftrightarrow22-2\left(x-9\right)=4\\ \Leftrightarrow2\left(x-9\right)=18\\ \Rightarrow x-9=9\\ \Leftrightarrow x=18\)
22-2.(x-9)=4⁵:4³
2.(x-5)-3.(x-4)=-6+15:9-3)
(x+7).(x-9)=0
/2x-5/-7=22
(/2x/-5)-7=22
tìm x,y thuộc z biết:x+y=x.y
18 x 123 + 9 x4567 x 2 + 3 x 5310 x 6/( 2+4+6+8+ ......+18+20+22)+48
thực hiện phép tính
A= 26/11x 7/4 x 22/21 x 9
B= -10/21 x [ 9/15 + (3/5)2 ]
C= ( 2 - 1/2 - 1/3) x ( 1- 1/4 - 1/7)
|2x-5|-7=22
15-|2x+3|=8
(2x+4)(x^2+9)=0
2(x-5)-3(x-4)=-6+15.(-3)
tìm x biết:(1/1*2*3+1/2*3*4+...+1/8*9*10)*x=22/45
a,1\3+2\5(x+1)=1
b.9\4:(x-22\3)=-1,5
c,1\4+1\3:3.x=-5
a) 92/9 + 13/5 - 56/9
b) 58/7 - (31/9 + 30/7)
c) 2/3 + 1/3 x 9/4 - 13/12
d) 41/8 - 7/4 : 11/5
e) 478/19 : 5/4 - 668/19 : 5/4
f) 32/21 x 49/45 : 16/22 x 15/33
g) 2020x2018+9 / 2019x2020-2011.
Giup minh voi minh dang can gap!!!
11×(x-9)+22=99
4×(x-3)+1=49
25+3×(x-8)=106
9×(x-4)-25=20
5+20÷(x+3)=7
25-14÷(2×X-3)=23
5+4×(2×X-3)=25
40-21÷(2×X+3)=33
