70 - (15 - x) : 3 = 65
(15 -x) : 3 = 70 - 65
(15 - x) : 3 = 5
15 - x = 5 . 3
15 - x = 15
x = 15 - 15
x = 0
Vậy ...
70-(15-x):3=65
(15-x):3 = 70-65
(15-x):3 = 5
15-x = 5 . 3
15-x=15
x = 15-15
x=1
70-(15-x);3=65
(15-x):3=70-65=5
15-x=5.3=15
x=15-15=1
k mình nha
70 - (15 - x) :3 =65
70-(15- x)=65.3
70-(15- x)= 195
15-x=70-195
15-x= -125
x= -125+15
x= -110
( 15 - x ) : 3 = 70 - 65
( 15 - x ) : 3 = 5
15 - x = 5 . 3
15 - x = 15
x = 15 - 15
x = 0
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