75-x=16
Tính
a) 12 : 3/4 + 75% x 1/2 - 16 x 50% b) 75% x 4 + 22,5 : 3 - 1,3/5
1,3/5 là hỗn số
a: \(12:\dfrac{3}{4}+75\%\cdot\dfrac{1}{2}-16\cdot50\%\)
\(=12\cdot\dfrac{4}{3}+\dfrac{3}{4}\cdot\dfrac{1}{2}-16\cdot0,5\)
\(=16-8+\dfrac{3}{8}\)
\(=8,375\)
b: \(75\%\cdot4+22,5:3-1\dfrac{3}{5}\)
\(=0,75\cdot4+7,5-1,6\)
\(=3+7,5-1,6\)
=10,5-1,6
=8,9
25 x 24 +25 x 48 + 75 x 16 + 75 x 56
Chỉ câu này thôi các bạn giúp mik với ạ, mik cảm ơn nhiều
=25(24+48)+75(16+56)
=72*25+72*75
=72*100
=7200
\(25.24+25.48+75.16+75.56\)
\(=25.\left(24+48\right)+75.\left(16+56\right)\)
\(=25.72+75.72\)
\(=\left(25+75\right).72\)
\(=100.72\)
\(=7200\)
75 x 8 x 16 x125
75x8x16x125=1200000
Ủng hộ nha
198 x 16 + 69 x 198 - 18 x 75 x 11
Tính hợp lí
= 198 x 16 + 69 x 198 - 75 x 198
= 198 x (16 + 69 - 75)
= 198 x 10 = 1980
x/16=y/12=75/100
Tìm x, biết:75:(2x+16)-3=5
\(75:\left(2x+16\right)-3=5\)
\(\Rightarrow75:\left(2x+16\right)=5+3\)
\(\Rightarrow75:\left(2x+16\right)=8\)
\(\Rightarrow2x+16=\dfrac{75}{8}\)
\(\Rightarrow2x=\dfrac{75}{8}-16\)
\(\Rightarrow2x=-\dfrac{53}{8}\)
\(\Rightarrow x=-\dfrac{53}{8}:2=-\dfrac{53}{8}.\dfrac{1}{2}\)
\(\Rightarrow x=-\dfrac{53}{16}\)
Ta có :
75 : (2x + 16) - 3 = 5
=> 75 : (2x + 16) = 8
=> 2x + 16 = 75/8
=> x = (75/8 - 16) : 2
=> x = - 53/16
(121/122 x 123/125 +127/129) x (1995/1996 x 17/16 - 21/25:16/17) x (42/30 x 75/23 - 19/23 x 210/38) =?
minh cung dang thac mac cau nay ban nao giup minh voi
8 x 75 x 3 + 6 x 25 x 4 - 240
______________________
15 x 2 x 6 + 18 x 16 x5
8 x 75 x 3 + 6 x 25 x 4 - 240
___________________________
15 x 2 x 6 + 18 x 16 x5
= 24 x 75 + 24 x 25 - 240 x 10
_________________________
3 x 5 x 2 x 6 + 3 x 6 x 2 x 8 x5
= 24 x (75 + 24 -10)
_________________
3x5x2x6x ( 1+8)
= 24 x 9 x 10 4
_________= ___
18 x 10 x 9 3
https://hoc24.vn/cau-hoi/8-x-75-x-3-6-x-25-x-4-240-15-x-2-x-6-18-x-16-x5tinh-nhanh.5861050326868
Tính nhanh
( 121/122 x 123/125 + 127/129) x ( 1995/1996 x 17/16 - 21/25 : 16/17 ) x ( 42/30 x 75/23 - 19/23 x 210/38)
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