Question

3*8+1-{4+[15*(8-5*m)+23]/4}=4

Answer 1

3 × 8 + 1 - { 4 + [ 15 × ( 8 - 5 × m ) + 23 ] : 4 } = 4

24 + 1 - { 4 + [ 15 × ( 8 - 5 × m ) + 23 ] : 4 } = 4

25 - { 4 + [ 15 × ( 8 - 5 × m ) + 23 ] : 4 } = 4

4 + [ 15 × ( 8 - 5 × m ) + 23 ] : 4 = 25 - 4

4 + [ 15 × ( 8 - 5 × m ) + 23 ] : 4 = 21

[ 15 × ( 8 - 5 × m ) + 23 ] : 4 = 21 - 4

[ 15 × ( 8 - 5 × m ) + 23 ] : 4 = 17

15 × ( 8 - 5 × m ) + 23 = 17 × 4

15 × ( 8 - 5 × m ) + 23 = 68

15 × ( 8 - 5 × m ) = 68 - 23

15 × ( 8 - 5 × m ) = 45

8 - 5 × m = 45 : 15

8 - 5 × m = 3

5 × m = 8 - 3

5 × m = 5

m = 5 : 5

m = 1