Tìm x :
\(x+x+x\times2+x\times4+x\times2=2016\)
ai k cho sakura trường mình mình k lại
Tìm x :
\(x+50=50\times2\)
ai nhanh nhất mình k cho
\(x+50=50\times2\)
\(x+50=100\)
\(x=100-50\)
\(x=50\)
Mk nhanh nhất đó
x + 50 = 50 x 2
x + 50 = 100
x = 100 - 50
x = 50
x + 50 = 50 x 2
x + 50 = 100
x = 100 - 50
x = 50
Tìm x:
\(\frac{1}{1\times2}+\frac{1}{2\times3}+\frac{1}{3\times4}+...+\frac{1}{x\times\left(x+1\right)}=\frac{2015}{2016}\)
1-1/x+1=2015/2016
=>1/x+1=1-2015/2016=1/2016
=>x+1=2016=>x=2015
mình không ghi lại đề nha:
\(1-\frac{1}{2}+\frac{1}{2}-\frac{1}{3}+...+\frac{1}{x}-\frac{1}{x+1}=\frac{2015}{2016}\)
<=>\(1-\frac{1}{x+1}=\frac{2015}{2016}\)
<=>\(\frac{x}{x+1}=\frac{2015}{2016}\)
=>x=
Đến đó bạn tự giải tiếp ha
=>(1/1-1/2)+(1/2-1/3)+(1/3-1/4)+...+(1/x-1/x+1)=2015/2016
=>1/1-1/x+1=2015/2016
=>x/x+1=2015/2016
=>x=2015
Tìm x biết:
\(\left(\left(4\times4+1\right)^{\sqrt{\frac{3}{2}\times2}}\right)\times x=\sqrt{6400}+\sqrt{6400}\times2\)
\(\left[\left(4.4+1\right)\sqrt{\frac{3}{2}.2}\right].x=\sqrt{6400}+\sqrt{6400}.2\)
\(\Rightarrow\left[17.\sqrt{3}\right].x=80+80.2\)
\(\Rightarrow17\sqrt{3}.x=240\)
\(\Rightarrow x=\frac{240}{17\sqrt{3}}\)
Tìm số nguyên x, biết:
\(2\times2^2\times2^3\times2^4\times.........\times2^x=1024\)
Giúp mình zới, mình đang cần gấp, cảm ơn!
\(x\times2+x\times3+x\times4+x=2013\)
x×2+x×3+x×4+x=2013
x×(1+2+3+4)=2013
x×10=2013
⇔x=2013/10
\(x\times2+x\times3+x\times4+x=2013\)
\(x\times\left(1+2+3+4\right)=2013\)
\(x\times10=2013\)
\(\Leftrightarrow x=\frac{2013}{10}\)
P/s tham khảo nha
X x 2 + X x 3 + X x 4 + X = 2013
X x ( 2 + 3 + 4 + 1 ) = 2013
X x 10 = 2013
X = 2013 : 10
X = \(\frac{2013}{10}\)
tìm x biết
\(\frac{x\times\left(1\times2+2\times3+3\times4+...+98\times99\right)}{98\times100\times33}=2010-|-2011|\)
Bài 1:
\(\dfrac{2}{1\times4}+\dfrac{2}{4\times7}+.....+\dfrac{2}{94\times97}\)
Bài 2:
\(6+3\times\left(x-3\right)=24\)
\(x\div0,25+\dfrac{x}{5}+x\times2=1972\)
Tìm x, biết: \(x\times\left(44+\frac{2010}{1\times2}+\frac{2006}{2\times3}+\frac{2000}{3\times4}+...+\frac{32}{44\times45}\right)=\frac{44}{45}\)
Tìm x :
\(\frac{\left(1\times2+2\times3+3\times4+...+98\times99\right)x}{26950}=12\frac{6}{7}:\frac{3}{2}\)