Question

A) [(X-1):100+90]:10-10=0
B) [(X+270:3)x5+100]:600=1
C) 9-(25-16):3=[18-3x(9-9)]:X

Answer 1

A) [(x-1):100+90]:10-10=0
[(x-1):100+90]:10=10
(x-1):100+90=100
(x-1):100=100-90
(x-1):100=10
x-1=1000
x=1001

B) [(x+270:3) *5+100]:600=1
 (x+90) *5+100=600
 (x+90) *5=600-100
 (x+90) *5=500
 x+90 =100
x=10

C) 9-(25-16):3=[18-3x(9-9)]:x
9-9:3=(18-3*0):x
9-3=18:x
6=18:x
x=3