Question

tìm \(x\) biết

a, \(5\dfrac{1}{3}\) + 0,357 x ( \(x\) - \(1\dfrac{2}{3}\) ) =\(\dfrac{3}{4}\) : \(\dfrac{9}{4}\) + 5

Answer 1

`a)5 1/3+0,375xx(x- 1 2/3)=3/4 : 9/4+5`

`=>16/3+3/8xx(x-5/3)=1/3+5`

`=>3/8xx(x-5/3)=10`

`=>3/8x-5/8=10`

`=>3/8x=10+5/8=23/8`

`=>x=23/8:3/8`

`=x=23/3`

Answer 2

\(a,\dfrac{16}{3}+0,357.\left(x-\dfrac{5}{3}\right)=\dfrac{3}{4}.\dfrac{4}{9}+5\\ \dfrac{16}{3}+0,357.\left(x-\dfrac{5}{3}\right)=\dfrac{1}{3}+5\\ \dfrac{16}{3}+0,357.\left(x-\dfrac{5}{3}\right)=\dfrac{1+5.3}{3}\\ \dfrac{16}{3}+0,357.\left(x-\dfrac{5}{3}\right)=\dfrac{16}{3}\\ 0,357.\left(x-\dfrac{5}{3}\right)=\dfrac{16}{3}-\dfrac{16}{3}\\ 0,357.\left(x-\dfrac{5}{3}\right)=0\\ x-\dfrac{5}{3}=0:0,357\\ x-\dfrac{5}{3}=0\\ x=\dfrac{5}{3}\)