x:5=45(d-3). tìm x. giup minh voi nhé
Cho 7/3 : 5/x = 14/15 tìm x giup minh voi
7/3:5/x=14/15
5/x=7/3:14/15
5/x=5/2
x=5×2/5=2
7/3:5/x=14/15
7/3 X x/5=14/15
7 X x=14
x =14 :7
x=2
giai phuong trinh
\(\sqrt{x}-5+\dfrac{1}{3}\sqrt{9x}-45=\dfrac{1}{5}\sqrt{25x}-125=6\)
giup minh voi
Sửa đề: \(\sqrt{x-5}+\dfrac{1}{3}\sqrt{9x-45}=\dfrac{1}{5}\sqrt{25x-125}+6\)
\(\Leftrightarrow\sqrt{x-5}+\dfrac{1}{3}\cdot3\cdot\sqrt{x-5}-\dfrac{1}{5}\cdot5\sqrt{x-5}=6\)
\(\Leftrightarrow\sqrt{x-5}=6\)
=>x-5=36
hay x=41
tìm x 7x/12-3/8=5/8-5x/12 ai giup minh voi ko minh minh xin cac ban day
=> 7x/12 + 5x/12 = 5/8 +3/8
=> 12x/12 =8/8=1
12x =12
x= 12:12 =1
a) 92/9 + 13/5 - 56/9
b) 58/7 - (31/9 + 30/7)
c) 2/3 + 1/3 x 9/4 - 13/12
d) 41/8 - 7/4 : 11/5
e) 478/19 : 5/4 - 668/19 : 5/4
f) 32/21 x 49/45 : 16/22 x 15/33
g) 2020x2018+9 / 2019x2020-2011.
Giup minh voi minh dang can gap!!!
58/7 - (31/9 + 30/7)
= 58/7 - 31/9 - 30/7
= (58/7 - 30/7) - 31/9
= 28/7- 31/9
= 4 - 31/9 = 36/9 - 31/9
= 5/9
478/19÷(-5/4)-668/19÷(-5/4)
=(478/19-668/19):(-5/4)
=-10 . (-4/5)
=8
A)4X(X-5)+X(X-1)
B)3X(6X-1)-X(X-6)
C)X(X-5)-X(X+3)-6(X+8)
D)Xmu2(X-2)-X(Xmu2-6)
giup minh voi=(
tìm số mũ(tìm x):3.5^2-4=5^x.5^x+4
giup minh voi
minh tick cho
tim x biet: |x-2|+|x-5|=3 AI GIUP MINH VOI
3/5;x=1/3+1/2 giup minh voi
3/5 x = 5/6
x = 5/6 : 3/5
x = 25/18
\(\dfrac{3}{5}:x=\dfrac{1}{3}+\dfrac{1}{2}\)
\(\dfrac{3}{5}:x=\dfrac{5}{6}\)
\(x=\dfrac{3}{5}:\dfrac{5}{6}\)
\(x=\dfrac{18}{25}\)
3/5:*=1/3+1/2
3/5:*=5/6
*=5/6:3/5
*=25/18
lam giup minh voi.minh can gap
a) -12 . ( x - 5 ) + 7 .( -x + 3 ) = 5
b) 30 . (x + 2 )- 6 .( x - 5 ) - 24 .x = 100
ai nhanh nhat mk se k.lam on giup minh voi
\(a,-12.\left(x-5\right)+7.\left(-x+3\right)=5\)
\(-12x+60-7x+21=5\)
\(-19x+81=5\)
\(-19x=5-81\)
\(-19x=-76\)
\(x=4\)
\(b,30.\left(x+2\right)-6.\left(x-5\right)-24.x=100\)
\(30x+60-6x+30-24x=100\)
\(0x+90=100\)
\(0x=100-90\)
\(0x=10\)
=> ko có giá trị nào thõa mãn x