Question

tìm số nguyên x biết

a, 2x+1/3=x-5/2          b, 4(x-2) ^2/3=12

25/30=2x+3/6            -7/x+1=6/x+27

Answer 1

a: =>2x-x=-5/2-1/3

=>x=-17/6

b: =>4(x-2)²=36

=>(x-2)²=9

=>x-2=3 hoặc x-2=-3

hay x=5 hoặc x=-1

c: =>2x+1/2=5/6

=>2x=1/3

hay x=1/6

Answer 2

a: =>2x-x=-5/2-1/3

=>x=-17/6

b: =>4(x-2)²=36

=>(x-2)²=9

=>x-2=3 hoặc x-2=-3

hay x=5 hoặc x=-1

c: =>2x+1/2=5/6

=>2x=1/3

hay x=1/6

Answer 3

25,75+69,05−16,81=

Answer 4

a,đúng