29 - [ 3 ( x - 2 ) + 15 ] = 2
[ 3 ( x - 2 ) + 15 ] = 29 - 2
[ 3 ( x - 2 ) + 15 ] = 27
3 ( x - 2 ) = 27 - 15
3 ( x - 2 ) = 12
( x - 2 ) = 12 : 3
( x - 2 ) = 4
x = 4 + 2
x = 6
29 - [ 3 ( x - 2 ) + 15 ] = 2
[ 3 ( x - 2 ) + 15 ] = 29 - 2
[ 3 ( x - 2 ) + 15 ] = 27
3 ( x - 2 ) = 27 - 15
3 ( x - 2 ) = 12
( x - 2 ) = 12 : 3
( x - 2 ) = 4
x = 4 + 2
x = 6
Ủng hộ nhé!
tim x biet
11-(15+11)=x-(29-9)
Tim so nguyen x, biet : a) -1/5 < x < 7/3
b) -2 1/3 < x <(=) 415/229
B1:tim cac so nguyenx,y biet:
X,y + 2.x- 3y= 11
B2 tim x biet
A -15.(x+2)+7.(2x-3)=(-5) . (+10)
Giai gap minh nhe
tim x biet : 1/3+1/6+1/10+1/15+...+2/x*(x+1) = 999/1000
Tim x: 29 - [ 3 ( x- 2) +15=2
Tim x biet : 67-(15-2x)3=23×5
tim x biet
2.x-15=4.x+25
tim x,y biet 15^x+8=y^2
B2:tim so tu nhien x biet :
a)2^x.4=128
b)x^15=x
c)2^x.2^2^2=2^3^2
d)(x^5)^10=x
