Question

[nguyễn hoàng lê thi]

Tìm x

a) x + 30 % . x = -1,1

b) \(\left(x-\frac{1}{2}\right):\frac{1}{3}+\frac{5}{7}=9\frac{5}{7}\)

c) \(\frac{-5}{6}-x=\frac{7}{12}+\frac{-1}{3}\)

d) \(\frac{x+3}{-15}=\frac{1}{3}\)

e) ( 4,5 - 2x) . \(\left(-1\frac{4}{7}\right)=\frac{11}{14}\)

GIÚP MK VS , MK ĐANG CẦN RẤT GẤP!

Answer 1

[phan thị minh anh]

 a.x+30/100x=-1,1

13/10x=-1,1

x=-11/13

b. (x-1/2):1/3 +5/7=9/5/7

(x-1/2):1/3=9

x-1/2=3

x=7/2

c. -5/6-x=7/12-1/3

x=-5/6-7/12-1/3

x=-7/4

d. 3(x+3)=-15

x+3=-5

x=-8

e. (4,5-2x)(-11/7)=11/14

4,5-2x=11/14:-11/7

4,5-2x=-1/2

2x=4,5+1/2

2x=5

x=5/2