Question

(7 x n+40+587-643-29)x2=36
[(54-m):5+27-7]:5=6
256:{48:[(28-25) x 4:y]}=32

Answer 1

(7 x n+40+587-643-29)x2=36
(7 x n+40+587-643-29)x2=36
(7xn-45)x2=36
7xn-45=36:2
7xn-45=18
7xn=18+45
7xn=63
n=63:7
n=9

[(54-m):5+27-7]:5=6
[(54-m):5+20]=6x5
(54-m):5+20=30
(54-m):5=30-20
(54-m):5=10
54-m=10x5
54-m=50
m=54-50
m=4

256:{48:[(28-25) x 4:y]}=32
256:[48:(3x 4:y)]=32
48:(3x 4:y)=256:32
48:(3x 4:y)=8
3x 4:y=48:8
3x 4:y=6
4:y=6:3
4:y=2
y=4:2
y=2