3x+3x+1+3x+2=351
3x.1+3x.3+3x.9=351
3x(1+3+9)=351
3x.13=351
3x=351:13
3x=27
3x=33
=>x=3
3x+3x+1+3x+2=351
3x.1+3x.3+3x.9=351
3x(1+3+9)=351
3x.13=351
3x=351:13
3x=27
3x=33
=>x=3
1/Tìm x,biết:
a)x+(x+1)+(x+2)+(x+3)+...+(x+99)+(x+100)=5555
b)1+2+3+4+...+x=820
c)3(x+1)=9.27
d)x+2x+3x+...+99x+100x=15150
e)(x+1)+(x+2)+(x+3)+...+(x+100)=205550
f)3x+3x+1+3x+2=351
Tìm x; biết: 3x + 3x+1 + 3x+2 + 3x+3 = 1080
tìm x biết:
(x-2)^3+(3x-1)(3x+1)=(x+1)^3
Tìm x biết 2.(x-3)-3x.(2-3x)=4.(1-2x)+15
1. Tìm x, biết
a) 3x/1.5 + 3x/5.9 + 3x/9.13 + ....+ 3x/81.83 = 4/15
1. Tìm x, biết
a) 3x/1.5 + 3x/5.9 + 3x/9.13 + ....+ 3x/81.83 = 4/15
1. Tìm x, biết
a) 3x/1.5 + 3x/5.9 + 3x/9.13 + ....+ 3x/81.83 = 4/15
1. Tìm x, biết
a) 3x/1.5 + 3x/5.9 + 3x/9.13 + ....+ 3x/81.83 = 4/15
1. Tìm x, biết
a) 3x/1.5 + 3x/5.9 + 3x/9.13 + ....+ 3x/81.83 = 4/15
1. Tìm x, biết
a) 3x/1.5 + 3x/5.9 + 3x/9.13 + ....+ 3x/81.83 = 4/15