Question

ajutatima va rog mult

Answer 1

a) x = 17 - 9 = 8 ∈ {6,7,8}
b) x = 20 - 21 = -1 (poate nu stii inca..) ∉ {0,1,2} deci nu are solutie
c) x = 37 - 36 = 1 ∈ {0,1,2}
d) x = 7 - 1 = 6 ∈ {4,5,6,7}
e) x = 3 + 4 = 7 ∈{4,6,7}
f) x = 3 ∈ {3,56,14}
g) x = 9 - 5 = 4 ∈ {4,5,9}
h) x = 17 - 10 = 7 ∉ {6,8} deci ecuatia nu are solutie in intervalul dat