Question

Tìm x, biết:

a, /2x-3/-2=5.

b,  1-(\(3\frac{2}{5}\)+x-4\(\frac{7}{15}\)):5\(\frac{2}{5}\)=0.

làm nhanh mk tick cho 3 cái.

Answer 1

b)\(1-\left(3\frac{2}{5}+x-4\frac{7}{15}\right):5\frac{2}{5}=0\)

=>\(1-\left(\frac{17}{5}+x-\frac{67}{15}\right)=0\)\

=>\(\frac{17}{5}+x-\frac{67}{15}=1\)

=>\(\left(\frac{17}{5}-\frac{67}{15}\right)+x=1\)

=>(\(\frac{51-67}{15}\))+x=1

=>\(\frac{-16}{15}+x=1\)

=>x=\(1-\frac{-16}{15}\)

=>x=\(\frac{31}{15}=2\frac{1}{15}\)

Answer 2

a)|2x-3|-2=5

=>|2x-3|=5+2

=>|2x-3|=7

=>2x-3=±7

Th1:2x-3=7

=>2x=10

=>x=5

Th2:2x-3=-7

=>2x=-10

=>x=-5

Answer 3

phần a sai để tôi sửa lại

Answer 4

sửa lại

a)|2x-3|-2=5

=>|2x-3|=5+2

=>|2x-3|=7

=>2x-3=±7

Th1:2x-3=7

=>2x=10

=>x=5

Th2:2x-3=-7

=>x=-2

Answer 5

a)|2x-3|-2=5

=>|2x-3|=5+2

=>|2x-3|=7

=>2x-3=±7

Th1:2x-3=7

=>2x=10

=>x=5

Th2:2x-3=-7

=>x=-2

Answer 6

con dog Edogawa Conan kia đừng có mà chép bài tau