7x + 2x = 918
x ( 7 + 2 ) = 918
9x = 918
x = 918 : 9
x = 102
Vậy x = 102
=))
7x + 2x = 918
=> 9x = 918
=> x = 918 : 9
=> x = 102.
7x + 2x = 918
9x = 918
x= 102 \(\in\)N
vậy x= 102
#mã mã#
7x + 2x = 918
<=> x ( 7 + 2 ) = 918
<=> 9x = 918
<=> x = 918 / 9
<=> x = 102
#Chúc bạn học tốt nhé <3
\(7x+2x=918\)
\(\Leftrightarrow x.\left(7+2\right)=918\)
\(\Leftrightarrow x.9=918\)
\(\Leftrightarrow x=918:9\)
\(\Leftrightarrow x=102\)
Vậy : \(x=102\)
Rất vui vì giúp đc bạn !!!
7x + 2x = 918
=>x( 7 + 2 )= 918
=>9x = 918
=>x = 918 \(\div\)9
vậy x = 102
7x+2x=918
\(\Rightarrow\)9x=918
\(\Rightarrow\)x=918:9
\(\Rightarrow\)x=102
vậy x=102
\(7x+2x=918\)
\(x\left(7+2\right)=918\)
\(9x=918\Rightarrow x=918:9\)
\(x=102\)
Vậy \(x=102\)
7x + 2x = 918
=> x . ( 7 + 2 ) = 918
=> x . 9 = 918
=> x = 918 : 9
=> x = 102
\(7x+2x=918\)
\(x\left(7+2\right)=918\)
\(x=918:9\)
\(x=102\)