\(3x-\left(0,8+\dfrac{2}{3}\right):3\dfrac{2}{3}=0,35\)
=>\(3x-\left(\dfrac{4}{5}+\dfrac{2}{3}\right):\dfrac{11}{3}=0,35\)
=>\(3x-\dfrac{12+10}{15}\cdot\dfrac{3}{11}=0,35\)
=>\(3x-\dfrac{22}{11}\cdot\dfrac{3}{15}=0,35\)
=>\(3x-\dfrac{2}{5}=0,35\)
=>3x-0,4=0,35
=>3x=0,75
=>\(x=\dfrac{0.75}{3}=0,25\)
1) 2x+3x+5x. 2) 2.x- x + 3.x. 3) 9.x - 3- 3.x
4) 0,8. x 0,2x-0,1.x. 5) x-0,2x -0,1.x. 6) 7/2 x-1/2 x
Giúp em với nhanh nhất vì tối nay em đi học rồi ạ
Tìm x
X-2=3
(6 và 3/7-0,75x-2/0,35)×2,8=10
Bài 1
A) 3/2+9/2 -6
B) -5/4:(1/4-7/8)+3/2 x(1/3-5/6)
C) (-2,5)x0,65 -1.5 x 0,3+(-0,35)x1,5
(-3,2) . -15/64 + ( 0,8 - 2 4/5 ) : 3 2/3
(-3,2).-15/64+(0,8-2/4/15):3/2/3
(-3,2)x-15/64+(0,8-2/4/15:3/2/3=
(-3,2) . \(\dfrac{-15}{64}\) + (0,8 - 2\(\dfrac{4}{15}\) ) : 3\(\dfrac{2}{3}\)
0,8÷(4/5×1,25)
(19/21--2/3)×2,8
3/11×(hỗn số 2 2/3-1,75)
Tìm x
a) \(\left[\left(6\frac{3}{7}-\frac{0,75.x-2}{0,35}\right).2,8+1,75\right]:0,05=2,35\)
b) \(\frac{3}{5}-\frac{2}{7}< \frac{2}{3}.x+\frac{3}{4}< \frac{1}{2}+\frac{7}{9}\)
