(13 x 7 + 13 x 8) : (29/3 - y) = 39
13 x (7 + 8) : (29/3 - y) = 39
13 x 15 : (29/3 - y) = 39
195 : (29/3 - y) = 39
29/3 - y = 195 : 39
29/3 - y = 5
y = 29/3 - 5 = 29/3 - 15/3 = 14/3
( 13 x 7 + 13 x 8 ) : ( 29/3 - y ) = 39
13 x ( 7 + 8) : ( 29/3 -y ) = 39
13 x 15 : ( 29/3 -y ) = 39
195 : ( 29/3 - y) = 39
29/3 - y = 195 : 39
23/9 - y = 5
y = 23/9 - 5
y = 14/3
TICK NHA
y =14/3
nha hộ mik nhé
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