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Rezolvati ecuatiile:
a) x-2supra5 = 1 intreg si 1supra3
b) 4x + 1 = 2x + 9
c) -5x+2=7
d) -7x+2=-2x+4

Răspuns :

CosmoteRo
b). 4x-2x=9-1
2x=8
x=4
c).-5x=7-2
-5x=5
x=-1
d).-7x+2x=4-2
-5x=2
x=-2/5
a).x-2/5=4/3
x=4/3+2/5
x=20/15+6/15
x=26/15

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