a) x. 125 = 100
x = 100 : 125
x = 4/5
b) { [ ( 120 : 60 ) . 5 ] } . 100
= [ 2 . 5 ] . 100
= 10 . 100
= 1000
\(x.125=22+78\)
\(\Leftrightarrow x.125=100\)
\(\Leftrightarrow x=100:125\)
\(\Leftrightarrow x=\frac{4}{5}\)
Câu b sai đề chắc luôn
\(a,x.125=22+78\)
\(x.125=100\)
\(x=100:125\)
\(x=0,8\)
x . 125 = 15625
x = 15625 / 125
x = 125
Chúc bạn vui vẻ !
x . 125 = 22 + 78
x . 125 = 100
x = 100 : 125
x = 100/125
x = 4/5