152-y-12=9.3
152-y-12=27
152-(y+12)=27
y+12=152-27
y+12=125
y=125-12
y=113
vậy y =113
152-y-12=9,3
152-y-12=9,3+12
152-y =21,3
y =152-21,3
y=131,3
152-y-12=9.3
152-y-12=27
152-y =27+12
152-y =15
y =152-15
y =137
\(152-y-12=9.3\)
\(140-y=27\)
\(y=140-27\)
\(y=113\)
vậy \(y=113\)
tinh nham :
152-y-12=9.3
152-y-12=27
152-y =27+12
152-y =39
y =152-39
y =113
152 - y - 12 = 9 . 3
152 - y - 12 = 27
152 - y = 27 + 12
152 - y = 39
y= 152 - 39
y = 113