a. \(x:3+27=48.2\)
\(\Leftrightarrow x:3+27=96\)
\(\Leftrightarrow x:3=96-27\)
\(\Leftrightarrow x:3=69\)
\(\Leftrightarrow x=69.3\)
\(\Leftrightarrow x=207\)
a) x : 3 + 27 = 48 x 2
x : 3 + 27 = 96
x : 3 = 96 - 27
x : 3 = 69
x = 69 x 3
x = 207
b)X x 5 : 7 = 123 -118
X x 5 : 7 = 5
X x 5 = 5 x 7
X x 5 = 35
x = 35 : 5
x = 7
b. \(x.5:7=123-118\)
\(\Leftrightarrow x.5:7=5\)
\(\Leftrightarrow x.5=5.7\)
\(\Leftrightarrow x.5=35\)
\(\Leftrightarrow x=35:5=7\)
Nhớ ấn đúng cho mình nha!