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rezolvati in R ecuatia 7-5(x+3)=3(x+2)

Răspuns :

7-5x-15=3x+6

7-5x-15-3x-6=o

-8x-14=0

-8x=14

x=14/-8(simplificam cu 2)

x=- 7/4

7-5(x+3)=3(x+2)
7-5x-15=3x+6
-8-5x=3x+6
-5x-3x=6+8
-8x=14
x=- 14/8 simplifici cu 2
x=- 7/4

(x=-7:4=-1,75)