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Misscarmina
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De rezolvat in R ecuatia
a)3-6x=2-4x
b)2x+(3-6x)=-17
c)2(x+1)=3(x-1)
d)5(3x-6)+4(3-2x)=5x-8
e)9(x-3)-4(7-3x)=5-3x

Răspuns :

Renatemambouko
a)3-6x=2-4x
2x=1
x=1/2
b)2x+(3-6x)=-17
2x+3-6x=-17
20=4x
x=5
 c)2(x+1)=3(x-1)
2x+2=3x-3
x=5
 d)5(3x-6)+4(3-2x)=5x-8
15x-30+12-8x=5x-8
2x-18=-8
2x=10
x=5
 e)9(x-3)-4(7-3x)=5-3x
9x-27-28+12x=5-3x
21x-55=5-3x
24x=60
x=60/24=10/4=5/2