\(\Leftrightarrow\left(\left(6\frac{3}{7}-\frac{0,75x-2}{0,35}\right).2,8+1,75\right)=0,1175\)
\(\Leftrightarrow\left(\frac{45}{7}-\frac{0,75x-2}{0,35}\right).2,8=-1,6325\)
\(\Leftrightarrow\frac{45}{7}-\frac{0,75x-2}{0,35}=\frac{-653}{1120}\)
\(\Leftrightarrow\frac{0,75x-2}{0,35}=\frac{7853}{1120}\Leftrightarrow x=5,93875\)
Tìm x,biết:
\(a,\)\(\left(2\frac{1}{3}+3\frac{1}{2}\right):\left(x+3\frac{1}{7}\right)+7\frac{1}{2}=1\frac{69}{86}\)
\(b,\left(7+0,00.x\right):24,7-12,3=77,7\)
\(c,\left(\left(6\frac{3}{7}-\frac{0,75-2}{0,35}\right).2,8+1,75\right):0,05=2,35\)
\(\left[5\frac{1}{6}-\left(0,6:7\frac{1}{2}+3\frac{2}{5}.0,35\right)\right]:\left(12-2\frac{2}{3}.4\frac{3}{4}\right)\)
Tính nhanh
tìm x trong các tỉ lệ thức sau
\(\left(a\right)3,8:\left(2x\right)=\frac{1}{4}:2\frac{2}{3}\)
\(\left(b\right)\left(0,25x\right):3=\frac{5}{6};0,125\)
\(\left(c\right)0,01:2,5=\left(0,75x\right):0,75\)
\(\left(d\right)1\frac{1}{3}:0,8=\frac{2}{3}:\left(0,1x\right)\)
giải chi tiết nhé aj giải thật chi tiết mk tick cho
Tìm x :
1) \(\left(-0,75x+\dfrac{5}{2}\right).\dfrac{4}{7}-\left(-\dfrac{1}{3}\right)=-\dfrac{5}{6}\)
2) \(\left(4x-9\right)\left(2,5+\dfrac{-7}{3}x\right)=0\)
3) \(\left|x-\dfrac{3}{4}\right|-\dfrac{1}{2}=0\)
4)\(\left(\dfrac{3}{5}-\dfrac{2}{3}x\right)^3=\dfrac{-64}{125}\)
tìm x
\(a.3.8:\left(2x\right)=\frac{1}{4}:2\frac{2}{3}\)
\(b.\left(0,25x\right):3=\frac{5}{6}:0,125\)
\(c.0,01:2,5=\left(0,75x\right):0,75\)
\(d.1\frac{1}{3}:0,8=\frac{2}{3}:\left(0,1x\right)\)
LÀM GIÚP MIK NHA MẤY BẠN
\(\left(\frac{x}{2}\right)^2+\left(\frac{x}{3}\right)^2+\left(\frac{x}{4}\right)^2=\left(\frac{x}{5}\right)^2+\left(\frac{x}{6}\right)^2+\left(\frac{x}{7}\right)^2\)
tìm x
Tìm x trong các tỉ lệ thức sau :
a) \(3,8:\left(2x\right)=\frac{1}{4}:2\frac{2}{3}\)
b) \(\left(0,25x\right):3=\frac{5}{6}:0,125\)
c) \(0,01:2,5=\left(0,75x\right):0,75\)
d) \(1\frac{1}{3}:0,8=\frac{2}{3}:\left(0,1x\right)\)
làm gấp ạ, đúng mik tick cho
Tìm \(x;y;z\in Q\) biết:
a)\(\left|x+\frac{3}{7}\right|+\left|y-\frac{4}{9}\right|+\left|z+\frac{5}{11}\right|=0\)
b)\(\left|x-\frac{2}{5}\right|+\left|x+y-\frac{1}{2}\right|+\left|y-z+\frac{3}{5}\right|=0\)
c)\(\left|x+y-2,8\right|+\left|y+z+4\right|+\left|z+x-1,4\right|=0\)
Giúp mk vs.Ai làm được câu nào thì làm!
\(\left(\frac{x}{2}\right)^2+\left(\frac{x}{3}\right)^2+\left(\frac{x}{4}\right)^2+\left(\frac{x}{5}\right)^2+\left(\frac{x}{6}\right)^2+\left(\frac{x}{7}\right)^2\) . Tìm giá trị thỏa mãn của x
