Question

560:{10+2•[20+45÷(13-2•5)]}=

Answer 1

560:{10+2x[20+45÷(13-2x5)]}
560 : {10+2x[20+45:(13-10)]}
560 : {10+2x[20+45:3]}
560 : {10+2x[20+15]}
560 : {10+2x35}
560 : {10 + 70}
560 : 80
7

Answer 2

560:{10+2.[20+45:(13-2.5)]}
560:{10+2.[20+45:3]}
560:{10+2.[20+15]}
560:{10+2.35}
560:{10+70}
560:80=7