Question

45....54....9=11,2....3...1...3=1, 56....49....7=15, 3...5....2.....5=1

Answer 1

$45 + 54 \div 9 = 11. \\ 2 - 3 - 1 + 3 = 1 \\ 56 + 49 \div 7 = 15 \\ 3 + 5 - 2 - 5 = 1$