34.8:y=0.8+7.5:15
(3×y-0.8):y+14.5=15
Giup mik bai nay nhaaa
a)72²/24²=(72/24)²
b)(-7.5)³/(2,5)³=(-7.5/2,5)³
c)15³/27=15³/27³
d)27²:25³
(3xy-0.8)÷y+14.5=15
Dấu . Là phay nha cac bn
(-3.2) . (-15)/64 + (0.8 - 2/4/15) : 3/2/3
\(\left(-3,2\right).\dfrac{-15}{64}+[0.8-2\dfrac{4}{15}]:3\dfrac{2}{3}\)
3 x X - 0.8 / X -14.5 = 15
(X x 3 - 0,8) : X + 14,5 = 15
3 x X - 0.8 / X -14.5 = 15
Làm tính nhân:
a ) 2 3 . 4 5 b ) − 3 4 . 8 − 5 c ) 12 5 . − 6 − 8
a ) 2 3 . 4 5 = 8 15 b ) − 3 4 . 8 − 5 = 6 5 c ) 12 5 . − 6 − 8 = 9 5