Các câu hỏi tương tự
Tìm x
a)\(\left(\frac{1}{24.25}+\frac{1}{25.26}+...+\frac{1}{29.30}\right).120+x:\frac{1}{3}=-4\)
b)\(1\frac{3}{5}+\left(\frac{\frac{2}{7}+\frac{2}{17}+\frac{2}{37}}{\frac{5}{7}+\frac{5}{17}+\frac{5}{37}}\right).x=\frac{16}{5}\)
Tìm y :\(\left(\frac{1}{24.25}+\frac{1}{25.26}+...+\frac{1}{29.30}\right).120+y:\frac{1}{3}=-4\)
Tìm x biết:
\(\frac{1}{10}+\frac{1}{40}+\frac{1}{88}+...+\frac{3}{\left(x+2\right)x\left(3x+5\right)}=\frac{3}{20}\)
giải giúp tôi nhé!arigator
tinh y
Xem chi tiết
\(\left(\frac{1}{24.25}+\frac{1}{25.26}+.....+\frac{1}{29.30}\right).120+y:\frac{1}{3}=-4\)
\(\left(\frac{1}{25.26}+\frac{1}{26.27}+............+\frac{1}{29.30}\right).150+103\div\left[1.03+\left(x+1\right)\right]=22\)
Tìm x biết
\(\frac{1}{24.25}+\frac{1}{25.26}+...+\frac{1}{29.30}+x:\frac{1}{3}=-4\)
\(_{A=\left(\frac{1}{26.25}+\frac{1}{25.26}+...+\frac{1}{29.30}\right).120+x+x:\frac{1}{3}=4}\)
Ai giúp em vs!
Tìm x, biết :
a, \(60\%x+0,4x+x:3=2\)
b, \(\left|2x-5\right|-7=\left(\frac{1}{49}-\frac{1}{3^2}\right)\left(\frac{1}{49}-\frac{1}{4^2}\right)...\left(\frac{1}{49}-\frac{1}{2015^2}\right)\)
c, \(\frac{x+1}{1}+\frac{2x+3}{3}+\frac{3x+5}{5}+...+\frac{20x+39}{39}=22+\frac{4}{3}+\frac{6}{5}+...+\frac{40}{39}\)
\(x-40\%\times x=3,6\)
\(3\frac{2}{7}\times x-\frac{1}{3}=-2\frac{3}{4}\)
\(-\frac{4}{7}+\frac{5}{7}\div x=\frac{1}{6}\)
\(\left(\frac{3x}{7}+1\right)\div\left(-4\right)=-\frac{1}{28}\)
\(-\frac{3}{x-2}=\frac{4}{-20}\)