Question

(X-105):21=15

Answer 1

\(\left(x-105\right)\div21=15\)

\(\Leftrightarrow x-105=15.21\)

\(\Leftrightarrow x-105=315\)

\(\Leftrightarrow x=315+105\)

\(\Leftrightarrow x=420\)

Answer 2

( X - 105 ) : 21 = 15

x - 105 = 15 x 21

x - 105 = 315

x = 315 + 105

x = 420

Answer 3

( x - 105 ) : 21 = 15

( x - 105 ) = 15 x 21

x - 105 = 315

x = 315 + 105

x = 420

 Vậy x = 420