Ta có: 2x-18=10
\(\Leftrightarrow2x=28\)
hay x=14
Vậy:x=14
2.x - 18 = 10
2.x = 10 + 18
2.x = 28
x = 28 : 2
x = 14
2.x-18=10
2.x =10+18
2.x =28
x =28:2
x =14
Vậy x=14
2.X-18=10
2.x=10+18
2x=28 x=28:2 x=14
vậy x= 14
cho b E z . Tim so nguyen x, biet b - x = -10 thi :
A. x= -10 + b B. x= -10 - b C. b= -10 -x D. x= b + 10
tim so nguyen x biet: 2.[x-1]=-7-21
tim so nguyen x, biet rang tong cua ba so : 3, -2 va x bang 5
cho a thuoc Z. tim so nguyen x, biet
a. a + x = 5
b. a - x = 2
a. x + 4 = -2
b. x + 8 = ( -5 ) + 4
c. tim so nguyen x, biet rang tong cua ba so : 3, -2 va x bang 5
1. Tìm x theo cách chuyển vế:
40: x+ 18 - (-2)= 10
tìm x biết
a) 7-(18+x)=-15
b) (x-17)-(-3)=0
c)-18-(x-6)=0
d) 29-(10+29)=x-(27-9)
Tìm x sao cho:
a) 18 - x = 58 - (-30)
b) x - 27 = (-43) - 9
c) 169 - (x + 4) = 69
d) (5x + 3) - (-24 + 4) = 33
e) 225 - (5x + 10) : 25 + 5 = -(-20)
Tim X :
a)x:1/3+2/3[1/5-1] =4
b)1/2 [x-3/5]=-1/3[7/6-3/2]
c)1/3-3/4=3/5 -x
d)4/7x-2/3=1/3+x
