(x+40).15=75÷12
( x+40).15=6,25
x+40=6,25÷15
x+40=5/12
x=5/12-40
x=-475/12
180-(x-45):2=120
( x-45):2=180-120
( x-45):2=60
x-45=60.2
x-45=120
x=120+45
x=165
k mik nha
\(\left(x+40\right).15=75:12\)
\(\Leftrightarrow\left(x+40\right).15=\frac{25}{4}\)
\(\Leftrightarrow x+40=\frac{25}{4}:15\)
\(\Leftrightarrow x+40=\frac{5}{12}\)
\(\Leftrightarrow x=\frac{-475}{12}\)
\(180-\left(x-45\right):2=120\)
\(\Leftrightarrow\left(x-45\right):2=60\)
\(\Leftrightarrow x-45=120\)
\(\Leftrightarrow x=165\)
\(\Leftrightarrow x=-15\)
( x + 40) . 15 = 75 : 12
(x+40). 15 = 25/4
x + 40 = 5/12
x = -475/12
b) 180 - ( x -45) : 2 = 120
(x-45) : 2 = 60
x -45 = 120
x = 165
(x+40).15=75:12
(x+40).15=25/4
x+40 =25/4:15
x+40 =5/12
x =5/12-40
x =-475/12
180-(x-45):2=120
(x-45):2=180-120
(x-45):2=60
x-45 =60.2
x-45 =120
x =120+45
x =165
(x+40).15=75:12
x+40.15=6,25
x+40=6,25.15
x+40=93,75
x=93,75-40
x=53,75