Question

126÷7-{28-4 {3-(40÷5-3)÷(17-3.4)]}

Answer 1

126÷7-{28-4 {3-(40÷5-3)÷(17-3.4)]}=126÷7-{28-4 {3-(8-3)÷(17-3.4)]}=126÷7-{28-4 {3-5÷(17-3.4)]=126÷7-{28-4 {3-5÷(17-12)]=126÷7-{28-4 [3-5÷5]=126÷7-{28-4 [3-1]=126÷7-{28-4+2}=126÷7-26=18-26= -8