200 - 18: (42 : 3 x X - 1) - 28 = 154
200 - 18 :(14 x X -1) = 182
18 : (14X - 1) = 182
18: 14X - 18 = 182
18 : 14X = 200
14X = 0,09
X = \(\frac{9}{1400}\)
200-18:(42:3 x X-1)-28=154
200-18:(14 x X-1)=154+28
200-18:(14 x X-1)=182
18:(14 x X-1)=200-182
18:(14 x X-1)=18
14 x X-1=1
X-1=1/14
X=1/14+1
X=15/14
Vậy x=15/14
Bấm đúng cho mình nha
200-18:(372:3.X-1)-28=166
200-18:(372:3.X-1) =166+28
200-18:(372:3.X-1) =194
200-18:(124.X-1) =194
18:(124.X-1) =200-194
18:(124.X-1) =6
124.X-1 =18:6
124.X-1 =3
124.X =3+1
124.X =4
X =4:124
X =\(\frac{1}{31}\)
200-18 : (42:3 x X-1) - 28 = 154
182 : ( 14 x X-1) = 154 +28
182 : ( 14 x X-1) = 182
( 14 x X-1) =1
14 x X =2
14 x X= 1/7
Ta có: \(200-18:\left(42:3.x-1\right)-28=154\)
\(\Rightarrow200-18:\left(4.x-1\right)=154+28=182\)
\(\Rightarrow18:\left(14.x-1\right)=200-182=18\)
\(\Rightarrow14.x-1=18:18=1\)
\(\Rightarrow14x=1+1=2\)
\(\Rightarrow x=2:14=\frac{2}{14}=\frac{1}{7}\)
Chắc chắn luôn! Ủng hộ nha
