Question

(Xx3+47)-315=146
(X:6-528)+307=517
(X:3-4)×9=306
(X:2)×3=30
(7×9-x×5)-9:3=20
909:9-(9×9:X-9)=101

Answer 1

x*3-528+307=517⇒x*3=517+528-307⇒x*3=738⇒x=738:3⇒x=246
(x:3-4)*9=306⇒x:3-4=34⇒x:3=38⇒x=38*3⇒x=114
(x:2)*3=30⇒x:2=30:3⇒x:2=10⇒x=20
celelalte????/

Answer 2

x*3+47=146+315=>
3*x=461-47=>x=414:3
x=138
(138*3+47)-315=(414+47)-
-315=461-315=146proba
x:6-528=517-307=>
x:6=210+528=>x=738*6
x=4428
(4428:6-528)+307=(738-
528)+307=210+307=517 proba
x:3-4=306:9=>x:3=34+4=>
x=38*3=>x=114
(114:3-4)*9=(38-4)*9=34*9=
=306proba
x:2=30:3=>x=10*2=>x=20
(20:2)*3=10*3=30proba
(7*9-x*5)-3=20=>
63-5*x=20+3=>5*x=63-23→
x=40:5=>x=8
(7*9-8*5)-9:3=(63-40)-3=
23-3=20proba
101-(81:x-9)=101=>81:x-9=101-101→81:x=0+9=>x=81:9=>x=9
909:9-(9*9:9-9)=101-(81:9-9)
→101-(9-9)=101-0=101proba