Toán 49(39-15)-39(49-15) .Tính nhanh nhất có thể 01/12/2021 By Camila 49(39-15)-39(49-15) .Tính nhanh nhất có thể
$49.(39-15)-39.(49-15)$ $=49.39-49.15-39.49+39.15$ $=(49.39-39.49)+(-49.15+39.15)$ $=-49.15+39.15$ $=15.(-49+39)$ $=15.(-10)$ $=-150$ Trả lời
$49.(39 -15) -39.(49 -15)$ $= 49.39 -49.15 -39.49 +39.15$ $= 49.(39 -39) -15.(49 -39)$ $= 49.0 -15.10$ $= 0 -150$ $= -150$ Trả lời
$49.(39-15)-39.(49-15)$
$=49.39-49.15-39.49+39.15$
$=(49.39-39.49)+(-49.15+39.15)$
$=-49.15+39.15$
$=15.(-49+39)$
$=15.(-10)$
$=-150$
$49.(39 -15) -39.(49 -15)$
$= 49.39 -49.15 -39.49 +39.15$
$= 49.(39 -39) -15.(49 -39)$
$= 49.0 -15.10$
$= 0 -150$
$= -150$