Question

quanto é: 180:{10+2x[20-45:(13-2x5)]}

Answer 1

180 : {10+2×[20-45:(13-2×5)]}=

180 : {10+2×[20-45:(13-10)]}=

180 : {10+2×[20-45:3]}=

180: {10+2×[20-15]}=

180:{10+2×5}=

180:{10+10}=

180:20=

9