Question

{120-(4*d)*3:6}:8=10

Answer 1

{120-(4*d)*3:6}:8=10
120 - (4 × d) × 3 :6 = 10×8
(4 × d) × 3 : 6 = 120-80
(4 × d) × 3 = 40 × 6
( 4 × d) = 240 :3
4 × d = 80
d = 80 :4
d = 20