( 3,5 + 2x ) . 7/3 = 16/3
3,5 + 2x = 16/3 : 7/3
3,5 + 2x = 16/7
2x = 16/7 - 3,5
2x = -17/14
x = -17/14 : 2
x = -17/28
( 3,5 + 2x ) . 7/3 = 16/3
3,5 + 2x = 16/3 : 7/3
3,5 + 2x = 16/7
2x = 16/7 - 3,5
2x = -17/14
x = -17/14 : 2
x = -17/28
\(\left(3,5-2x\right).3\dfrac{1}{3}\)=\(\dfrac{22}{3}\)
làm đầy đủ theo các bước nhé
Tìm x biết :
a) \(^{\dfrac{4}{9}+x=\dfrac{5}{3}}\)
b)\(\dfrac{3}{4}.x=\dfrac{-1}{2}\)
c) \(\dfrac{3}{7}+\dfrac{5}{7}:x=\dfrac{1}{3}\)
d)\(3\dfrac{1}{4}:\left|2x-\dfrac{5}{12}\right|=\dfrac{39}{16}\)
1) tính hợp lí ( nếu có thể )
c) \(\dfrac{2}{-11}\). 6\(\dfrac{2}{7}\)+ \(\dfrac{3}{7}\):3 + 5 d) 1,75 : 5 + 2,5 . ( \(4^2\)- 4. 4,1)
2) tìm x
a) 1/2-x=-1/6 b) x+3,5=7,8-12,6:2 c) 7/35 = 35-x/-105
bài 1 : tìm x biết ;
a) 2x + 3 = 5 b)(2x - 3)2= 9 c)3x + 4 = 2x - 7 d)(4x - 1)3= 27 e) (x - 7) . 2 =3(2x +4) f) 52x-1= 125 g) 3.(x + 6) - 2x = 3 + 12x
Bài 1. Thực hiện phép tính:
a) |5.0,6+\(\dfrac{2}{3}\)|- \(\dfrac{1}{3}\)
b)(0,25 - 1\(\dfrac{1}{4}\)) : 5 - \(\dfrac{1}{5}\).(-3)\(^2\)
c)\(\dfrac{14}{17}.\dfrac{7}{5}-\dfrac{-3}{17}:\dfrac{5}{7}\)
d)\(\dfrac{7}{16}+\dfrac{-9}{25}+\dfrac{9}{16}+\dfrac{-16}{25}\)
e)\(\dfrac{5}{6}+2\sqrt{\dfrac{4}{9}}\)
a. 2/3x-1/2=1/10
b. 39/7:x=13
c. (14/5x-50):2/3=51
d. (x+1/2)(2/3-2x)=0
e. 2/3x-1/2x=5/12
g. (x.44/7+3/7)11/5-3/7=-2
h. x.13/4+(-7/6)x-5/3=5/12
i.93/17:x+(-4/17):x+22/7:52/3=4/11
j. 17/2-|2x-3/4|=-7/4
k. (x+1/5)^2+17/25=26/25
l. -32/27-(3x-7/9)^3=-24/27
Bài 1: Tìm x, biết
a) 3\(\dfrac{1}{3}\) x+ 16\(\dfrac{3}{4}\) = -13,25
b) 3\(\dfrac{2}{7}\).x - \(\dfrac{1}{8}\) = 2\(\dfrac{3}{4}\)
c) x : 4\(\dfrac{1}{3}\) = - 2,5
d) (\(\dfrac{3x}{7}\) + 1) : (-4) = \(\dfrac{-1}{28}\)
giúp em
tìm x biết:...........giúp mk vs
a. x/5+1/2=6/10
b. x+3/15=1/3
c. x-12/4=1/2
d. 1/2x+1/2=5/2
e.-2/3-1/3(2x-5)=3/2
f. (3x-1)(-1/2x+5)=0
g. 1/2-2/3x=7/12
h. 3/4x+1/5=1/6
i. 17/12-|2x-3/4|=-7/4
3.(7-2x)=-9/2