60+24:(x-1)=28

    84  :(x-1) =28

            x-1 =84:28

            x-1 = 3

            x    =3+1

            x    = 4

Vậy x =4

\(60+24:\left(x+1\right)=28.\)

\(24:\left(x+1\right)=28-60\)

\(24:\left(x+1\right)=-32\)

\(24=-32\times\left(x+1\right)\)

\(24=-32x-32\)

\(32x=-32-24\)

\(32x=-56\)

\(x=\frac{-56}{32}\)

\(\frac{28}{15}\times\frac{1}{4}\times3+\left(\frac{8}{15}-\frac{79}{60}\right)\times\frac{24}{47}\)

=\(\frac{7}{15}\times3+\left(\frac{32}{60}-\frac{79}{60}\right)\times\frac{24}{47}\)

=\(\frac{7}{5}+\frac{47}{60}\times\frac{24}{47}\)

=\(\frac{7}{5}+\frac{2}{5}\)

=\(\frac{5}{5}\)

=\(1\)

\(\frac{28}{15}\)x\(\frac{1}{4}\)x3+(\(\frac{8}{15}\)+\(\frac{-79}{60}\))x\(\frac{24}{47}\)=

=\(\frac{28}{15}\)x\(\frac{1}{4}\)x3+(\(\frac{32}{60}\)+\(\frac{-79}{60}\))x\(\frac{24}{47}\)

=\(\frac{28}{15}\)x\(\frac{1}{4}\)x3+\(\frac{-47}{60}\)x\(\frac{24}{47}\)

=\(\frac{7}{15}\)x3+\(\frac{-47}{60}\)x\(\frac{24}{47}\)

=\(\frac{7}{5}\)+\(\frac{-2}{5}\)

=\(\frac{5}{5}\)=1

sao lại y-

Giúp mình đi mà 😭

y= hay y- v

mấy cái câu đầu thì tớ ko hiểu !(thông cảm)

17/60-5/18-64/90= -127/180

ko chắc là đúng^

uk thank you câu'

 x - (28 - x) = x - 24x−(28−x)=x−24.

60% .x =-2.4

=>3/5 x =-2.4

x=-2.4:3/5

x=-4

nha

60%.X= -2,4

X= -4