I 2x+4 I + I4-xI=11
I 2x+4+4-xI=11
I x+8 I=11
<=> x+8=11 =>x=3
hoặc x+8=-11=>x=-19
Violympic toán 6
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text{Tìm x, biết:}a) left(19x+2.5^2right):14left(13-8right)^2-4^2b) x+left(x+1right)+left(x+2right)+...+left(x+30right)1240c) 11-left(-53+xright)97d) -left(x+84right)+213-16
Đọc tiếp
\(\text{Tìm x, biết:}\)
\(a\)) \(\left(19x+2.5^2\right):14=\left(13-8\right)^2-4^2\)
\(b\)) \(x+\left(x+1\right)+\left(x+2\right)+...+\left(x+30\right)=1240\)
\(c\)) \(11-\left(-53+x\right)=97\)
\(d\)) \(-\left(x+84\right)+213=-16\)
23 tháng 2 2021 lúc 9:15
Tìm x :
a) \(\left|x+\dfrac{11}{17}\right|+\left|x+\dfrac{2}{17}\right|+\left|x+\dfrac{4}{17}\right|=4x\)
b) \(\left|x+\dfrac{1}{2}\right|+\left|x+\dfrac{1}{6}\right|+\left|x+\dfrac{1}{12}\right|+\left|x+\dfrac{1}{20}\right|+..+\left|x+\dfrac{1}{110}\right|=11x\)
Tìm x,y biết \(\left|x-11\right|+\left|x-8\right|^{1981}+\left|x+1\right|=\frac{48}{\left|y-2\right|+\left|y+1\right|+\left|x+2\right|}\)
left(dfrac{2}{3}+dfrac{2}{13}+dfrac{2}{11}+dfrac{2}{6}right) left(dfrac{5}{4}+dfrac{5}{7}+dfrac{5}{6}+dfrac{5}{11}right)
___________________ X ___________________
left(dfrac{4}{3}+dfrac{4}{13}+dfrac{4}{11}+dfrac{4}{6}right) left(dfrac{9}{4}+dfrac{9}{7}+dfrac{9}{6}dfrac{9}{11}right)
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\(\left(\dfrac{2}{3}+\dfrac{2}{13}+\dfrac{2}{11}+\dfrac{2}{6}\right)\) \(\left(\dfrac{5}{4}+\dfrac{5}{7}+\dfrac{5}{6}+\dfrac{5}{11}\right)\)
___________________ X ___________________
\(\left(\dfrac{4}{3}+\dfrac{4}{13}+\dfrac{4}{11}+\dfrac{4}{6}\right)\) \(\left(\dfrac{9}{4}+\dfrac{9}{7}+\dfrac{9}{6}\dfrac{9}{11}\right)\)
các bạn có thể giải hộ mình bài này ko?
Tìm x,biết:
\(\frac{2}{\left(x+2\right)\left(x+4\right)}+\frac{4}{\left(x+4\right)\left(x+6\right)}+\frac{6}{\left(x+8\right)\left(x+14\right)}=\frac{x}{\left(x+2\right)\left(x+14\right)}\)
tìm x
x-4=11-2x
(x-3).(x-2)=0
7x-10=x-28
\(\left|x-5\right|=10-\left|-2\right|\)
1. Tìm x, biết:
a) \(\frac{2}{5}x-x=\frac{\left(-2018\right)^0}{5^2}\)
b) \(\left|-1\frac{1}{2}x+2x\right|-\frac{7}{4}=0,5\)
c) x + \(\left(x+\frac{2}{7}\right)+\frac{-5}{11}=\frac{4}{11}\)
d) |0,25x - 20o/o| \(+\frac{3}{8}=1\frac{3}{8}\)
Tìm giá trị nhỏ nhất :
\(D=\left|x-\dfrac{1}{2}\right|+\left|x-\dfrac{1}{3}\right|+\left|x-\dfrac{1}{4}\right|+...+\left|x-\dfrac{1}{2022}\right|\)
1: \(\dfrac{2\cdot\left(x+2\right)}{3}-\dfrac{5\cdot\left(x-1\right)}{4}=\dfrac{3\cdot\left(5-x\right)}{2}-1\dfrac{1}{2}\cdot\left(2x+3\right)\)