Question

1225:[(13xb-30):3-10]=7. Aflatil pe b

700+435:3-[368:c+3x(22+13+24)=660,aflatil pe c

[200-25x(2+18:d)]:4+10-63:9=28

Answer 1

1225:[(13 x b -30):3-10]=7
(13 x b-30):3-10=175
(13 x b-30):3=185
13 x b-30=555
13 x b=585
b=45

700-435:3-[368:c+3 x (22+13+24)]=660
145-(368:c x 39)=40
368:c x 39=105
368:c=2
c=184

[200-25 x (2+18:d)]:4+10-63:9=28
[200- 25 x(2+18:d)]:4+10-7=28
[200-25x(2+18:D)]:4=25
200-25x (2+18:d)=100
25 x (2+18:d)=100
2+18:d=4
18:d=2
d=9

Answer 2

[200-25 x (2+18:d)]:4+10-63:9=28
[200- 25 x(2+18:d)]:4+10-7=28
[200-25x(2+18:D)]:4=25
200-25x (2+18:d)=100
25 x (2+18:d)=100
2+18:d=4
18:d=2
d=9