\(y+y\times48=6860\div35\)
y + y x 48 = 6860 : 35
Giúp mk bài này nha
y + y x 48 = 6860 : 35
y x 1 + y x 48 = 196
y x (1+48) = 196
y x 49 = 196
y = 196 : 49
y = 4
Tính nhanh:
\((45\times46+47\times48)\times(51\times52-49\times48)\times(45\times128-90\times64)\times(1995\times1996+1997\times1998)\)
\(=\left(45\cdot128-45\cdot128\right)\cdot\left(45\cdot46+47\cdot48\right)\cdot\left(51\cdot52-49\cdot48\right)\cdot\left(1995\cdot1996+1997\cdot1998\right)\)
=0*A
=0
Tính nhanh: \(\frac{864\times48-432\times96}{864\times48+432}\)
a)\(\frac{864.48-432.96}{864.48+432}\)
=\(\frac{864.48-432.2.48}{864.48+432}\)
=\(\frac{864.48-864.48}{864.48+432}\)
=\(\frac{0}{864.48+432}\)
=0
864x48-432x96/864x48+432=2x432x48-432x48x2/864x48+432=0/864x48+432=0.
**** mình nha
x + x × 48 = 6860 : 35
x + x x 48 = 6860 : 35
x x ( 1 + 48 ) = 196
x x 49 = 196
x = 196 : 49
x = 4. Vậy x = 4
x+x×48=6860:35
x×1+x×48=196
x×(1+48)=196
x×49=196
x=196:49
x=4
x + x × 48 = 6860 : 35
x × 1 + x × 48 = 6860 : 35
x × (1+48) = 196
x × 49 = 196
x = 196 : 49
x = 4
Bài 1 : Tính nhanh:
a) 2 + 4 + 6 + 8 + 16 + ..... + 1024 + 2048
b)\(\frac{864\times48-432\times96}{864\times48+432}\)
Tinhs nhanh:
\(\dfrac{16\times48+16\times24+16\times28}{325-317+426-418}\)
giúp mình với ạ, cảm ơn các bạn rất nhiều!
=16x(48+24+28)/8+8
=16x100/16
=1600/16
=100
NHỚ TICK NHA
\(\frac{864\times48-43296}{2003.2004.2017}\)
tính nhanh
864.48-432.96 = 432.2.48-432.96=432.96-432.96=...=0
.....=> \(\frac{864.48-432.96}{2003.2004.2017}=0\)
Tính nhanh :
a) \(\frac{2006\times2005-1}{2004\times2006+2005}\)
b) \(\frac{864\times48-432\times96}{864\times48+432}\)
Các bạn giải hộ mình nha !
Mong các ban giúp đỡ !!!!!
Tinh bang cach thuan tien nhat. Viet ket qua duoi dang so thap phan:
\(\dfrac{36\times48}{96\times72}=...=...\)
`(36xx48)/(96xx72) = (36xx48)/(48xx2xx36xx2) = 1/4 = 0,25`