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Rezolvați ecuatiile:
a) 8x-2=5x+10
b)x:5/2 - 1/3=7
c)3×(x+3/2)+2x=7x+3/2
VA ROG,CAT MAI REPEDE


Răspuns :

a)8x-2=5x+10

8x-5x=10+2
3x=12
x=12/3
x=4
b)x÷5/2-1/3=7
x×2/5-1/3=7
2/5x-1/3=7
Înmulțești cu 15
6x-5=105
6x=105+5
6x=110
x=110/6
x=55/3
c)3(x+3/2)+2x=7x+3/2
3x+9/2+2x=7x+3/2
5x+9/2=7x+3/2
5x-7x=3/2-9/2
-2x=-3
x=2/3