Question

Va roooooog ajutooooooooooor!!!

Answer 1

x=10 Urmează 20, 30, 5, 15
x=12 Urmează 24, 36, 19, 17
x=14 Urmează 28, 42, 23, 19

Answer 2

x+x=5+5=10
x+x=6+6=12
x+x=7+7=14
x+x+x=3+3+4=10
x+x+x=6+4+2=12
x+x+x=7+6+1=14
x+x-5=13+2-5=10
x+x-5=15+2-5=12
x+x-5=17+2-5=14
x+5=5+5=10
x+5=7+5=12
x+5=9+5=14