Question

Rezolvati urmatoarele ecuatii in multimea numerelor rationale : a)x+7= 9 b)x-3=7 c)x-8=5 d)x+2=7 e)14+x=31 f)21-x=12 g)43+x=12 h)39-x=-6


URGENT DAU COROANA

Va rogg cat de repede posibil

Answer 1

a) x+7=9. b) x-3=7
x= 9-7. x= 7+3
x= 2 x= 10

c) x-8=5 d) x+2=7
x= 5+8. x= 7-2
x= 13. x= 5

e) 14+x=31 f) 22-x=12
x= 31-14. x= 12+22
x+ 17. x= 34

g) 43+x=12 h) 39-x= -6
x= 43-12. x= -6 +39
x= 31. x= +33

•Sa sti ca nu sunt foarte sigura de exercițiul H