Tìm X biết : (10+X)+(11+X)+(13+X)+(16+X)+...+(38+X)=892
[10+x] + [11+x] + .........+[37+x ] + [38+x] =892
Tìm x ∈ ℕ , biết:
a ) 1 2 + − 1 3 + − 2 3 ≤ x < − 3 5 + 1 6 + − 2 5 + 3 2 b ) − 3 8 + − 18 21 + − 1 7 < x ≤ − 1 6 + 8 17 + 5 − 6 + 9 17 + 1
a ) − 1 2 ≤ x < 2 3 = > x = 0. b ) − 1 < x ≤ 1 = > x ∈ {0;1}
Tìm x, biết :
(x - 2)^2 = 38/25 + 9/10 - 11/15 + 13/21 - 15/28 + 17/36 - ..... + 197/4851 - 199/4950
Tìm x biết:
a, x+1/10+x+1/11+x+1/12+x+1/13
b,x+10/20+x+8/22=x+6/24+x+3/27
c,x+7/19+x3/15=x+7/16+x+3/15
Bui Bao Ngoc oi! phan a,la (x+1)/10 hay x+(1/10)?
cac phan khac nua!
Tìm x biết : x+2/10^10+x+2/11^11=x+2/12^12+x+2/13^13
Tìm số nguyên x thỏa mãn -16/13 < x < 11/10
Tìm x, biết: (10 + x) + (11 + x) + … + ( 38 + x) = 928 (ai bt đáp án giúp mình với)
=>29x+696=928
=>29x=232
hay x=8
Tìm x biết
x+2/10^10+x+2/11^11=x+2/12^12+x+2/13^13
Tìm x biết
\(\frac{x+2}{10^{10}}+\frac{x+2}{11^{11}}=\frac{x+2}{12^{12}}+\frac{x+2}{13^{13}}\)
\(\frac{x+2}{10^{10}}+\frac{x+2}{11^{11}}=\frac{x+2}{12^{12}}\frac{x+2}{13^{13}}\)
=> x + 2 = 0
=> x = 0 - 2
=> x = -2