(x+5)+(x-9)=x+2
ai lam cho minh nhanh minh se tick cho nhieu nhe
-x/4=-9/x.Giup minh giai bai tap nay nhe!
giup minh 2 cau nay nhe ^^
1) 120 + ( (999-9x) : 60 ) x ( day la dau nhan ) 24= 480. Tim x
2) 3( x-9 ) + 15 = 12 + 243 : 32. Tim x
Giup mk nhe>.<!!!
Mk dang GAP!!!!!
4.x10-9.x8=0 tìm x giup minh nhe
Tim x biet:
5x+9/240=39/40
Giup minh nhe!
-32/27-(3.x-7/9)3=-24/27
cac banlam nhanh nha minh can gap
dau cham la dau nhan nhe
Tim x
A, 6 x + x = 5^11 : 5^9 +3^1
B, 7 x - x = 5^21 : 5^19 + 3 . 2^2 -7^0
C, 7 x - 2x = 6^17 : 6^15 + 44 : 11
giup minh nhe . Thank you
1+5+9+13+17+...+x = 501501
tim x
nhanh nhe mn, sang mai minh can roi
ai nhanh tick
a) 5/6 x 11/4 - 5/4 x 23/6
b) 9/16 x 13/4 - 9/4 x 5/16 + 9/16 x 17/
hay tinh tong:
1/1 x 2 + 1/2 x 3 + 1/3 x 4 + .... + 1/n (n + 1)
chung minh:
1/22 + 1/32 + 1/42 + ..... + 1/n2 < 1
giai dum nhe