Question

Rezolvati urmatoarele ecuatii in multimea numerelor rationale:

a) x - 8 = 5
b) x + 2 = 7
c) 21 - x = 12
d) 43 + x = -1
e) 39 - x = -6

urgent!!

Answer 1

Răspuns

a) x=13

b) x=5

c) x=9

d) x=-44

e) x=45

Explicație pas cu pas:

a) x - 8 = 5

x=5+8

x=13

b) x + 2 = 7

x=7-2

x=5

c) 21 - x = 12

x=21-12

x=9

d) 43 + x = -1

x=-1-43

x=-44

e) 39 - x = -6

x=39+6

x=45