Question

rezolvati ecuatii in multimea N,efectuind si verificarea a) a+35=20 b)5y=18 c) t/6=100 d)4x-20=0

Answer 1

a) a + 35 = 20

a = 20 - 35 = -15 ∉ N

b) 5y = 18

y = 18/5 = 3,6 ∉ N

c) t/6 = 100

t = 100 · 6 = 600 ∈ N

d) 4x - 20 = 0

4x = 20

x = 20 : 4 = 5 ∈ N

@robertinnifd