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Dau coroana si 50 de puncte cine rezolva ecuatile

2x-4=30

5a=24=69

(12-x):2=6

35:(x +3)=7

2x+3-1+4x=8


Răspuns :

Răspuns:

a)x = 17

b)

c)12-x=12

x=0

d)x=243

e) x=1

Explicație pas cu pas:

a)2x-4=30

2x=34

x=17

c)12-x=12

-x=0

x=0

d)x+3=245

x=242

e)2x+2+4x=8

6x=6

x=1

2x-4=30 2x=30+4 2x=34 x=34:2 x=17
(12-x):2=6 12-x=6•2 12-x=12 X=12-12 x=0
35:(x+3)=7 X+3=35:7 x+3=5 x=5-3 x=2
2x+3-1+4x=8 2x+2+4x=8 6x+2=8 6x=8-2
6x=6 x=1