3/5 X - 3/5 + X = 5 mình đang cần gấp
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-3x+(-9)+5x-5=-10
(-3x+5x)+(-9-5)=-10
-2x+(-14)=-10
-2x=-10-(-14)
-2x=24
x=24:(-2)
x=-12. chúc bạn học tối nha
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a)
(1/3-1/5)x1/4 = 1/3x1/4-1/5x1/4=1/12-1/20=1/30
(1/3-1/5)x1/4 = 2/15x1/4=1/30
b)
2/5 x 3/7 + 2/5 x 4/7= 6/35 + 8/35 = 14/35 = 2/5
2/5 x 3/7 + 2/5 x 4/7= (3/7+4/7) x 2/5 = 1 x 2/5 = 2/5
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a: C1: (1/3-1/5)*1/4
=2/15*1/4=2/60=1/30
C2: (1/3-1/5)*1/4
=1/3*1/4-1/5*1/4
=1/12-1/20=1/30
b: C1: 2/5*3/7+2/5*4/7
=6/35+8/35=14/35=2/5
C2: 2/5*3/7+2/5*4/7
=2/5(3/7+4/7)
=2/5*1=2/5
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\(\Leftrightarrow-\dfrac{2}{5}\left(4x-3\right)^2=-\dfrac{5}{18}\)
\(\Leftrightarrow\left(4x-3\right)^2=\dfrac{25}{36}\)
\(\Leftrightarrow4x-3\in\left\{\dfrac{5}{6};-\dfrac{5}{6}\right\}\)
hay \(x\in\left\{\dfrac{23}{24};\dfrac{13}{24}\right\}\)
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X + \(\frac{5}{2}\)x \(\frac{2}{3}\)= \(\frac{5}{2}\)
X + \(\frac{5}{3}\) = \(\frac{5}{2}\)
X = \(\frac{5}{2}\)- \(\frac{5}{3}\)
X = \(\frac{5}{6}\)
~ Hok T ~
x + 5/2 x 2/3 = 5/2
x + 10/6 = 5/2
x = 5/2 - 10/6
x = 5/6
Ai trên 10 SP k tui ikkkkkkkk
\(\dfrac{3}{5}x-\dfrac{3}{5}+x=5\)
\(\Rightarrow\dfrac{3}{5}x+x-\dfrac{3}{5}=5\)
\(\Rightarrow\dfrac{8}{5}x=5+\dfrac{3}{5}\)
\(\Rightarrow\dfrac{8}{5}x=\dfrac{28}{5}\)
\(\Rightarrow x=\dfrac{28}{5}:\dfrac{8}{5}\)
\(\Rightarrow x=\dfrac{28}{5}.\dfrac{5}{8}\)
\(\Rightarrow x=\dfrac{7}{2}\)
3/5 x ( X - 1 ) + X = 5
(X + 1) + X = 5 - 3/5
X + 1 + X = 22/5
2X + 1 = 22/5
= 2X = 22/5 - 1
2X = 17/5
X = 17/5 : 2
X = 17/10