3/2*(x-5/4)-5/8=x 5x-2/3=5-3x/2 10x+3/12=1+6+8x/9 7x-1/6+2x=16-x/5 4(0,5-1,5x)=-5x-6/3

0 bình luận về “3/2*(x-5/4)-5/8=x 5x-2/3=5-3x/2 10x+3/12=1+6+8x/9 7x-1/6+2x=16-x/5 4(0,5-1,5x)=-5x-6/3”

1. a)3/2*(x-5/4)-5/8=x

   =>3.2x-15/8-5/8=X

   =>3/2x-x=15/8+5/8

   =>x.(3/2-1)=5/2

   =>1/2X=5/2

   =>x=5

   vậy x=5

   hơn 3 sao là đc ak

   b)4(0,5-1,5x)=-5x-6/3

   =>2-6x=-5x-2

   =>6x-5x=2+2

   =>x=4 

   vậy x=4

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2. Bạn tham khảo nhé

            $\frac{3}{2}$.(x – $\frac{5}{4}$) – $\frac{5}{8}$ = x

   <=> $\frac{3}{2}$.x – $\frac{15}{8}$ – $\frac{5}{8}$ = x

   <=> $\frac{3}{2}$.x – $\frac{15}{8}$ – $\frac{5}{8}$ – x = 0

   <=> $\frac{1}{2}$.x = $\frac{15}{8}$ + $\frac{5}{8}$

   <=> $\frac{1}{2}$.x = $\frac{5}{2}$

   <=>                      x = $\frac{5}{2}$ : $\frac{1}{2}$

   <=>                      x = 5 

   Vậy x = 5

           5x – $\frac{2}{3}$ = 5 – $\frac{3x}{2}$

   <=> $\frac{30x}{6}$ – $\frac{4}{6}$ = $\frac{30}{6}$ – $\frac{9x}{6}$ 

   <=> 30x – 4 = 30 – 9x

   <=> 30x + 9x = 30 + 4

   <=>         39x = 34

   <=>             x = $\frac{34}{39}$ 

   Vậy x = $\frac{34}{39}$ 

           10x + $\frac{3}{12}$ = 1 + 6 + $\frac{8x}{9}$

   <=> 10x + $\frac{1}{4}$  = 7 + $\frac{8x}{9}$

   <=> $\frac{360x}{36}$ + $\frac{9}{36}$ = $\frac{252}{36}$  + $\frac{32x}{36}$ 

   <=> 360x + 9 = 252 + 32x

   <=> 360x – 32x = 252 – 9

   <=>  328x = 243

   <=>        x = $\frac{243}{328}$ 

   Vậy x = $\frac{243}{328}$ 

            7x – $\frac{1}{6}$ + 2x = 16 – $\frac{x}{5}$

   <=>  $\frac{240x}{30}$ – $\frac{5}{30}$ + $\frac{60x}{30}$ = $\frac{480}{30}$ – $\frac{6x}{30}$ 

   <=> 240x – 5 + 60x = 480 – 6x

   <=> 300x + 6x = 480 + 5

   <=>      306x = 485

   <=>            x = $\frac{485}{306}$ 

   Vậy x = $\frac{485}{306}$ 

           4(0,5 – 1,5x) = -5x – $\frac{6}{3}$

   <=> 2 – 6x = -5x – $\frac{6}{3}$

   <=> 5x – 6x = – $\frac{6}{3}$ – 2

   <=>     -x = -4

   <=>       x = 4

   Vậy x = 4

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