\(\left(x-1\right):2,8=7,8:18,2\)
\(\left(x-1\right):2,8=\frac{3}{7}\)
\(x-1=\frac{6}{5}\)
\(x=\frac{11}{5}\)
P/s:#Học Tốt#
(x-1):2,8=7,8:18,2
(x-1): 14/5=39/5:91/5
(x-1): 14/5= 3/7
x-1 = 3/7.14/5
x-1 = 6/5
x =1+6/5
x = 11/5
x = 2,2
Vậy x = 2,2
(x-1) : 2.8 = 3/7
x-1 = 3/7 x 2.8
x-1 = 1.2
x = 1.2 + 1
x = 2.2
\(\left(x-1\right):2,8=7,8:18,2\)
\(\left(x-1\right):2,8=\frac{3}{7}\)
\(x-1=\frac{3}{7}.2,8\)
\(x-1=\frac{6}{5}\)
\(x=\frac{6}{5}+1\)
\(x=\frac{11}{5}\)
Chúc bạn học tốt !
cảm ơn mọi người nhiều nha ^^^
\(\left(x-1\right):2,8=7,8:18,2\)
\(\left(x-1\right):2,8=\frac{3}{7}\)
\(x-1=\frac{3}{7}.2,8\)
\(x-1=1,2\)
\(x=1,2+1\)
\(x=2,2\)