x+2( x-5) - 1/2= 67/2
Những câu hỏi liên quan
Tìm x thuộc Z, biết: 1. 2 |x - 1| - 5(x + 3) - 2(x-7) |x - 1|- 7x 2. |x - 2| - 5(x - 4) 20 - 5x...
Đọc tiếp
Tìm x thuộc Z, biết: 1. 2 |x - 1| - 5(x + 3) - 2(x-7) = |x - 1|- 7x 2. |x - 2| - 5(x - 4) =20 - 5x 3. 4(x - 2) - 3(x + 4 =(-4)(+3)(-125)(+25)(-8) 4. -3(2x - 4) + 7(x-5) = (-67)(1-301) - 301 . 67 5. 7(x - 5) - 4(x+3) = 2(x - 5)+ (13-135 + 49 ) - (13+49) 6. 5(x-3) - 2(x + 1)= 3 + 2(x-1)+(18 + 29) +( 185 - 18 - 29)
Tìm x
11/8 : x - 2/5 + -1/6= -1/5
4/7. x-x. 1/3 + -16/21 = -2/3
-11/12.x + 15/2. ( x + -1/5) = 67/8
\(\dfrac{11}{8}:x-\dfrac{2}{5}+-\dfrac{1}{6}=-\dfrac{1}{5}\\ =>\dfrac{11}{8}:x-\dfrac{2}{5}=-\dfrac{1}{5}-\left(-\dfrac{1}{6}\right)\\ =>\dfrac{11}{8}:x-\dfrac{2}{5}=-\dfrac{1}{5}+\dfrac{1}{6}\\ =>\dfrac{11}{8}:x-\dfrac{2}{5}=-\dfrac{6}{30}+\dfrac{5}{30}\\ =>\dfrac{11}{8}:x-\dfrac{2}{5}=-\dfrac{1}{30}\\ =>\dfrac{11}{8}:x=-\dfrac{1}{30}+\dfrac{2}{5}\\ =>\dfrac{11}{8}:x=-\dfrac{1}{30}+\dfrac{12}{30}\\ =>\dfrac{11}{8}:x=\dfrac{11}{30}\\ =>x=\dfrac{11}{8}:\dfrac{11}{30}\\ =>x=\dfrac{11}{8}.\dfrac{30}{11}\\ =>x=\dfrac{30}{8}\\ =>x=\dfrac{15}{4}\\ \dfrac{4}{7}x-\dfrac{1}{3}x+\left(-\dfrac{16}{21}\right)=-\dfrac{2}{3}\\ =>\left(\dfrac{4}{7}-\dfrac{1}{3}\right)x=-\dfrac{2}{3}-\left(-\dfrac{16}{21}\right)\\ =>\left(\dfrac{12}{21}-\dfrac{7}{21}\right)x=-\dfrac{2}{3}+\dfrac{16}{21}\\ =>\dfrac{5}{21}x=-\dfrac{14}{21}+\dfrac{16}{21}\\ =>\dfrac{5}{21}x=\dfrac{2}{21}\\ =>x=\dfrac{2}{21}:\dfrac{5}{21}\)
\(=>x=\dfrac{2}{21}.\dfrac{21}{5}\\ =>x=\dfrac{2}{5}\\ -\dfrac{11}{12}x+\dfrac{15}{2}\left(x+-\dfrac{1}{5}\right)=\dfrac{67}{8}\\ =>-\dfrac{11}{12}x+\dfrac{15}{2}.x-\dfrac{1}{5}=\dfrac{67}{8}\\ =>\left(-\dfrac{11}{12}+\dfrac{15}{2}\right)x=\dfrac{67}{8}+\dfrac{1}{5}\\ =>\left(-\dfrac{11}{12}+\dfrac{90}{12}\right)x=\dfrac{335}{40}+\dfrac{8}{40}\\ =>\dfrac{79}{12}x=\dfrac{343}{40}\\ =>x=\dfrac{343}{40}:\dfrac{79}{12}\\ =>x=\dfrac{343}{40}.\dfrac{12}{79}\\ =>x=\dfrac{343.12}{40.79}\\ =>x=\dfrac{343.3}{10.79}\\ =>x=\dfrac{1029}{790}\)
Đúng 0
Bình luận (0)
tính cách thuạn tiện nhất
25 x 67 x 4
125 x 2 x 4
67 x 5 x 2
50 x 78 x 2
25 x 67 x 4 = ( 25 x 4) x 67 = 100 x 67 = 6700
125 x 2 x 4 = ( 125 x 4) x 2 = 500 x 2 = 1000
67 x 5 x 2 = 67 x ( 5x2) = 67 x 10 = 670
50 x 78 x 2= ( 50 x 2) x 78 = 100 x78 = 7800
Đúng 3
Bình luận (1)
25 x 67 x 4 = (25 x 4) x 67 = 100 x 67 = 6700
125 x 2 x 4 = ( 125 x 4 ) x 2 = 500 x 2 = 1000
67 x 5 x 2 = 67 x ( 5 x 2) = 67 x 10 = 670
50 x 78 x 2 = ( 50 x 2 ) x 78 = 100 x 78 = 7800
Đúng 2
Bình luận (0)
25x4x67=6700
125x2x4=1000
67x(5x2)=670
50x2x78=7800
Đúng 0
Bình luận (0)
Xem thêm câu trả lời
tìm x
5)
4x x 5 x 4x 3 5
6)
2
2
x 2 x 1 6
7)
2
3
(3 2) 3 .
4
x x x
8) (3x + 1). (2x- 3) – 6x.(x + 2) = 16
8: =>6x^2-9x+2x-3-6x^2-12x=16
=>-19x=19
=>x=-1
Đúng 1
Bình luận (0)
a) 19/6.x+67/4 = -13,25
b) x/3 - 10/21 = -1/7
c)x - 25%.x =1/2
d) -5/6+8/3+-29/6 <x<-1/2 +2 +5/2
1 x 1 =
5 x 2 =
5 + 4 =
67 x 12 =
1 x 1 = 1
5 x 2 = 10
5 + 4 = 9
67 x 12 = 804
k mk nha
thank you
Đúng 0
Bình luận (0)
1 x 1 = 1
5 x 2 = 10
5 + 4 = 9
67 x 12 = 804
Đúng 0
Bình luận (0)
Xem thêm câu trả lời
1/ Tính
a. ( - 67) . ( 2 - 301 ) - 301 . 67
b.35 . 99 + 19 . ( - 7) x 5
c. -110 + [ 7 . (-5) - 15 . (-2) ] 3-10
2/ Tìm x
a. 2x - ( x - 37)= - 155 + (2 -x)
b. -5.(3 - x ) 2 = - 605
giúp mình với
ai làm nhanh mình chọn liền
a) \(\left(-67\right).\left(2-301\right)-301.67\)
\(=-67.2+67.301-301.67\)
\(=-67.2=134\)
b) \(35.99+19\left(-7\right).5\)
\(=35.99-35.19\)
\(=35.\left(99-19\right)\)
\(=35.80=2800\)
Đúng 0
Bình luận (0)
câu a. bạn sai rồi
-67.2=-134
chứ hk phải là 134
Đúng 0
Bình luận (0)
1. TÌM X :
10+3.(x-6)=5^10:5^8
2.TÍNH
A,100-[150-8.(7-4)^2]
B,(-999)+[(-23)+999]-[10-(-67)]
Bài 1:
$10+3(x-6)=5^{10}:5^8=5^2=25$
$3(x-6)=25-10=15$
$x-6=15:3=5$
$x=5+6=11$
Đúng 0
Bình luận (0)
Bài 2:
a. $100-[150-8(7-4)^2]=100-(150-8.3^2)=100-150+8.3^2$
$=-50+72=72-50=22$
b. $=-999-23+999-10-67=(-999+999)-10-(67+23)$
$=0-10-90=-(10+90)=-100$
Đúng 0
Bình luận (0)
(67/111+2/33-5/117)x(1/3-25%-1/12)
(67/111+2/33-5/117)x(1/3-25%-1/12)
=-335*x/1285713
Đúng 0
Bình luận (0)