( x+40 ) * 15 = 75 * 2
( x+40 ) * 15 = 150
( x+40 ) = 150 : 15
x + 40 = 10
x = 10 - 40
x = ( -30 )
HOk tốt
( x + 40 ) * 15 = 75 * 2
( x + 40 ) * 15 = 150
x + 40 = 150 : 15
x + 40 = 10
x = 10 - 40
x = -30
\(\left(x+40\right).15=75.2\)
\(\Rightarrow\left(x+40\right).15=150\)
\(\Rightarrow x+40=150:15\)
\(\Rightarrow x+40=10\)
\(\Rightarrow x=10-40\)
\(\Rightarrow x=-30\)
Vậy x = -30
_Chúc bạn học tốt_
(x + 40) . 15 = 75 . 2
=> (x + 40) . 15 = 150
=> x + 40 = 150 : 15
=> x + 40 = 10
=> x = 10 - 40
=> x = -30
Vậy x = -30