a) \(\left(x-\frac{5}{8}\right).\frac{5}{18}=\frac{-15}{36}\)
\(\Rightarrow x-\frac{5}{8}=\frac{-15}{36}:\frac{5}{18}\)
\(\Rightarrow x-\frac{5}{8}=\frac{-3}{2}\)
\(\Rightarrow x=\frac{-3}{2}+\frac{5}{8}\)
\(\Rightarrow x=\frac{-7}{8}\)
c) \(x\)là ước của 4
\(\Rightarrow x\inƯ\left(4\right)=\left\{\pm1;\pm2;\pm4\right\}\)
nhớ tk ^.^\(\)
\(\)
\(a)\) \(\left(x-\frac{5}{8}.\right).\frac{5}{18}=-\frac{15}{36}\)
\(\Rightarrow x-\frac{5}{8}=-\frac{15}{36}:\frac{5}{18}\)
\(\Rightarrow x-\frac{5}{8}=-\frac{15}{36}.\frac{18}{5}\)
\(\Rightarrow x-\frac{5}{8}=-\frac{3}{2}\)
\(\Rightarrow x=-\frac{3}{2}+\frac{5}{8}\)
\(\Rightarrow x=-\frac{12}{8}+\frac{5}{8}\)
\(\Rightarrow x=-\frac{7}{8}\)
Vậy \(x=-\frac{7}{8}\)
\(b)\frac{x+2}{5}=-\frac{15}{2}\)
\(\Rightarrow\left(x+2\right).2=-15.5\)
\(\Rightarrow\left(x+2\right).2=-75\)
\(\Rightarrow x+2=-75:2\)
\(\Rightarrow x+2=-37,5\)
\(\Rightarrow x=-37,5-2\)
\(\Rightarrow x=-39,5\)
\(c)\)Do x là Ư ( 4 )
\(\Rightarrow x\in\left\{1;-1;2;-2;4;-4\right\}\)
Chúc bạn học tốt !!!!
a, x - 5/8 = -15/36 : 5 / 18 = -3/2
x = -3/2 + 5/8 = 7/8
b, <=> 5 . ( - 15 ) = x + 2 . 2
=> x = -8
c, x = { 1; 2; 4 }
\(a)\left(x-\frac{5}{8}\right).\frac{5}{18}=-\frac{5}{36}\)
\(\Leftrightarrow x-\frac{5}{8}=\frac{-5}{36}:\frac{5}{18}\)
\(\Leftrightarrow x-\frac{5}{8}=-\frac{1}{2}\)
\(\Leftrightarrow x=\frac{1}{8}\)
\(b)\frac{x+2}{5}=\frac{-15}{2}\)
\(\Leftrightarrow2x+4=-75\)
\(\Leftrightarrow2x=-79\)
\(\Leftrightarrow x=-\frac{79}{2}\)
\(c)x=\left\{\pm1;\pm2;\pm4\right\}\)
a ) (x-5/8).5/18=-15/36
x-5/8 =-15/36:5/18
x-5/8 =-15/36.18/5
x-5/8 =(-3).1/2.1
x-5/8 =-3/2
x =-3/2+5/8
x -7/8
b ) x+2/5 = -15/2
=>(x+2).2=5.(-15)
(x+2).2=-75
x+2=(-75):2
x+2=-75/2
x=-75/2-2
x=-79/2
c ) x là ước của 4
=> Ư(4)={-1,1,-2,2,-3,3}
Vậy x thuộc {-1,1,-2,2,-3,3}
Nếu đúng thì kết bạn và k cho mình nha
