Răspuns :

Supergunchopid

a) 9-2x+8-250+10x-40=5-3x-4x-4

9+8-250-40-2x+10x=1-7x

17-290+8x=1-7x

17-290+15x=1

15x-273=1

15x=274

b) 7x supra 3 se amplifica cu 4

13 supra 2 se amplifică cu 6

7x supra 6 se amplifica cu 2

3x supra 4 se amplifica cu 3

7x+13-7x=17-3x

17-3x=13

13+3x=17

3x=4

Aylin40id

Răspuns:

a)9-2(x+4)-10(25-x+4)=5-3x-4(x+1)

9-2x-8-10(29-x)=5-3x-4(x+1)

9-2x-8-290+10x=5-3x-4x-4

9-2x-8-290+10x=1-7x

-289+8x=1-7x

-289-1=-7x-8x

-290=-15x

x=-290/-15(simplifici la 5 adică,împarti)

x=58/3

b)7x/3+13/2-7x/6=17/12-3x/4(numitor comun 12)

28x+78-14x=17-9x

14x+78=17-9x

14x+9x=17-78

23x=-61

x=-61/23

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