35 x 2 x10 x 32
rut gon roi tinh 17/51 x 45/30
24/15 x 56/72 x10 14
32/48 x 35/21 x 63/14 x 9/ 30
Câu 1: \(\frac{17}{51}\)x \(\frac{45}{30}\)= \(\frac{1}{3}\)x \(\frac{3}{2}\)
= \(\frac{1}{2}\).
Câu 2: \(\frac{24}{15}\)x \(\frac{56}{72}\)x \(\frac{10}{14}\)= \(\frac{8}{5}\)x \(\frac{7}{9}\)x \(\frac{5}{7}\)
= \(\frac{56}{45}\)x \(\frac{5}{7}\)
= \(\frac{8}{9}\)
Câu 3: \(\frac{32}{48}\times\frac{35}{21}\times\frac{63}{14}\times\frac{9}{30}=\frac{2}{3}\times\frac{5}{3}\times\frac{9}{2}\times\frac{3}{10}=\frac{3}{2}\)
k nha
a)17/51x45/40=1/3x3/2=3/6=1/2
b)24/15x56/72x10/14=8/5x7/9x5/7=8/9
c)32/48x35/21x63/14x9/30=2/3x5/3x9/2x3/10=3/2
x x 134 -x x24 -x x 10 = x x ( 134 - 24 - 10)
x = x x 100
x = 1300 : 100
x = 13
x = 23 x 35 x 60 x10 x10
x=4830000
Chúc bạn học tốt nha
Tìm số nguyên x thõa mãn:
a) x 6 = − 1 2
b) x 10 = 3 5
a) x 6 = − 1 2 ⇒ x 6 = − 3 6 ⇒ x = − 3
b) x 10 = 3 5 ⇒ x 10 = 6 10 ⇒ x = 6
Tìm số nguyên x, biết:
a) 5 8 = x 14
b) x 6 = 1 − 3
c) 3 − 5 = x 10
d) 3 5 = − 9 x
e) x 2 = 2 x
f) x − 5 = − 5 x
a) x ∈ ∅
b) x = -2
c) x = -6
d) x = -15
e) x = 2 hoặc x = -2
f) x = 5 hoặc x = -5
TÍNH NHANH
10 x 10 x 10 x10 x 10 x 10 x 10 x10 x10 x10 = ?
P=50% x\(\frac{4}{3}\) x10\(\frac{7}{35}\) x 0,75
ai nhanh mk tick
P=50% x4/3 x10/7/35 x 0,75
P=1/2x4/3x357/35x3/4
P=4x357x3/2x3x35x4
P=357/70
P=51/10
\(P=50\%\cdot\frac{4}{3}\cdot10\frac{7}{35}\cdot0,75\)
\(P=\frac{1}{2}\cdot\frac{4}{3}\cdot\frac{51}{5}\cdot\frac{3}{4}\)
\(P=\frac{1\cdot4\cdot51\cdot3}{2\cdot3\cdot5\cdot4}=\frac{51}{2\cdot5}=\frac{51}{10}\)
\(P=\frac{51}{10}\)
(x –15) .15 = 0 b) 32 (x –10 ) = 32
c) ( x – 5)(x – 7) = 0 d) (x – 35).35 = 35
c)(x-5)(x-7)=0
x=5 hoặc x=7
Vậy \(x\in\left\{5;7\right\}\)
2 x 107 + 2 x 106 +105 +2 x104 +103 +9 x 103 +4 x10 +4 =
em iu oi
em chep sai de roi
ket qua la 22121944
k anh nha
anh muon chich em qua
2.x+17=35:32 (19-x).2-20=4
a: =>2x+17=27
=>2x=27-17=10
=>x=5
b: =>2(19-x)=24
=>19-x=12
=>x=7
\(2\cdot x+17=3^5:3^2\)
\(\Rightarrow2\cdot x+17=3^3\)
\(\Rightarrow2\cdot x+17=27\)
\(\Rightarrow2\cdot x=27-17\)
\(\Rightarrow2\cdot x=10\)
\(\Rightarrow x=\dfrac{10}{2}\)
\(\Rightarrow x=5\)
___________
\(\left(19-x\right)\cdot2-20=4\)
\(\Rightarrow\left(19-x\right)\cdot2=24\)
\(\Rightarrow19-x=24:2\)
\(\Rightarrow19-x=12\)
\(\Rightarrow x=19-12\)
\(\Rightarrow x=7\)