Question

2+b*9-25=40
(d*4+20):4=12
(c-104+2)*5+3=98
36-42:e:(15:3-4:1)-20=10
11-(7*5-9*9:f:3):8=7
22-5*(38-4*g)=12
26+(6*h-7*3):9=27

Answer 1

2+bx9-25=40
2+bx9=40+25
2+bx9=65
bx9=65-2
bx9=63
b=63:9
b=7

(dx4+20):4=12
dx4+20=12x4
dx4+20=48
dx4=48-20
dx4=28
d=28:4
d=7

(c-104+2)x5+3=98
(c-104+2)x5=98-3
(c-104+2)x5=95
c-104+2=95:5
c-104+2=19
c-104=19-2
c-104=17
c=17+104
c=121

36-42:e:(15:3-4:1)-20=10
36-42:e:(5-4)=10+20
36-42:e:1=30
42:e:1=36-30
42:e:1=6
42:e=6x1
42:e=6
e=42:6
e=7

11-(7x5-9x9:f:3):8=7
(35-81:f:3):8=11-7
(35-81:f:3):8=4
(35-81:f:3)=4x8
35-81:f:3=32
81:f:3=35-32
81:f:3=3
81:f=3x3
81:f=9
f=81:9
f=9

22-5x(38-4xg)=12
5x(38-4xg)=22-12
5x(38-4xg)=10
38-4xg=10:5
38-4xg=2
4xg=38-2
4xg=36
g=36:4
g=9

26+(6xh-7x3):9=27
(6xh-21):9=27-26
(6xh-21):9=1
6xh-21=1x9
6xh-21=9
6xh=9+21
6xh=30
h=30:6
h=5