=>(x+9/11)=0 hoặc (x-25/31)=0
+/Nếu x+9/11=0
=>x=-9/11
+/Nếu x-25/31=0
=>x=25/31
=>(x+9/11)=0 hoặc (x-25/31)=0
+/Nếu x+9/11=0
=>x=-9/11
+/Nếu x-25/31=0
=>x=25/31
Tìm x:
a) 3/4x + 2/5x=1
b) ( x-9/11)( x-25/31)=0
c) x-3/7:9/14=7/3
Ai giúp đc k ah?!
(x+9/11)(x-25/31)=0
(X+9/11)(x-25/31) = 0
Tìm x biết
(x+\(\frac{9}{11}\)).(x-\(\frac{25}{31}\))
tìm x
-x-17=-31
-15-x=-5
(-3)-x=-15
x+(-31)=-45
11-(-15+11)=x-(25-9)
Tìm x :
a,5/7 . 3x-8/5=35/9
b, 2/9 . 5x+1/2- 1/18=5/36
c, ( x+9/11 ) . ( x-25/31)=0
d,x/2=-3/y
a) 25 . 8 - 12 . 5 + 272 : 17 - 8
b) 125 : 25 + 14 - 142 : 71
c) 13 . 17 - 256 : 16 + 14 :7 -1
d) 15 . 24 - 14 . 5 ( 145 : 5 - 27 )
2, Tìm X, biết:
a) 37 + x = 55
b) x - 31 = 24
c) 21 ( x - 11 ) = 21
d) 9 . ( x - 29 ) = 0
e) ( x - 1954 ) . 5 = 50
f) 30 . 60 - x = 30
tìm số nguyên x, biết
( 2x + 4 ) ( x + 2 ) = 0
x - ( 25 - 9 ) = 11 - ( 15 + x )
9 *x -2 *x = 6 mũ 27 / 6 mũ 25 +48 /12
11 mũ x = 5 *x + 5 mũ 31 / 5 mũ 29 +3*2 mũ 2 -10 mũ 0