3x + 2 - 3x = 216
=> 3x.32-3x.1=216
=>3x(32-1)=216
=>3x.(9-1)=216
=>3x.8=216
=>3x=216:8
=>3x=27
=>33=27
=>x=3
vậy x=3
3x + 2 - 3x = 216
=> 3x.32-3x.1=216
=>3x(32-1)=216
=>3x.(9-1)=216
=>3x.8=216
=>3x=216:8
=>3x=27
=>33=27
=>x=3
vậy x=3
3^x+2-3x=216
6x (3x + 1)-216 (3x 1 ) = 0
a)\(4x+3x=217\)
b)\(9x-3x=216\)
c)\(6x-3x+23=230\)
d)\(5x+3x+x=72\)
giúp mk với mn ơi😢
9x trừ 3x =216
Tìm/ x,y,z biet 3x/8=3y/64=3z/216 va2x^2+2y^2-z=1
Giúp mình với
Tìm x biết
3x+1+15x=216
a) 5x + 2x = 62 - 50
b) 5x + x = 150 : 2 + 3
c) 6x + x = 511 : 59 + 31
d) 5x + 3x = 36 : 33.4 + 12
4x + 2x = 68 – 219 : 216
Bai 1;Tim x,y,z
a; x/z+y+1=y/x+z+1=z/x+y-2=x+y+z
b; 3x/8=3y/64=3z/216 va 2x^2+2y^2-z^2=1
Tìm x,y biết : (x+2y )(3x+7y)=216
a) 5x + 3x = 36 : 33.4 + 12
4x + 2x = 68 – 219 : 216
a) 5x + x = 39 – 311:39
b) 7x – x = 521 : 519 + 3.22 - 70
c) 7x – 2x = 617: 615 + 44 : 11