(129-a).543=51042
129-a=51042:543
129-a=94
a=129-94
a=35
học tốt nha bn
(129-a) x 543 = 51042
=> 129 - a = 51042 :543
=> 129 - a = 94
=> a = 129 - 94
=> a = 35
\(\left(129-a\right)\times543=51042\)
\(\Leftrightarrow129-a=94\)
\(\Leftrightarrow a=35\)
\(\left(129-a\right).543=51042\)
\(\Rightarrow\)\(129-a=51042:543\)
\(\Rightarrow\)\(129-a=94\)
\(\Rightarrow\)\(a=129-94\)
\(\Rightarrow\)\(a=35\)
( 129 - a ) x 543 = 51042
=> 129 - a = 51042 : 54 = 94
=> a = 129 - 94 = 35
