Question

b:8:6=3 Cx3x7=63 (d+25)x2=120

Answer 1

1) b : 8 : 6 = 3
b : 8 = 3x 6
b : 8 = 18
b = 18 x 8 
b = 144

2) c x 3 x 7 = 63
c x 21 = 63
c = 63 : 21
c = 3

3) ( d + 25 ) x 2 = 120 
d + 25 = 120 : 2
d + 25 = 60
d = 60 - 25
d = 35