Question

[48+50x100;(28:a+3x2)-14]x[(50-4x5)+(143-4x6]=42316.
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Answer 1

[48+50x100:(28:a+3x2)-14]x[(50-4x5)+(143-4x6]=42316
[48+50x100:(28:a+6)-14]x[(50-20)+(143-24]=42316
[48+50x100:(28:a+6)-14]x(30+119)=42316
[48+50x100:(28:a+6)-14]x149=42316
[48+50x100:(28:a+6)-14]=42316 :149
48+50x100:(28:a+6)-14=284
50x100:(28:a+6)=284+14-48
50x100:(28:a+6)=250
100:(28:a+6)=250:50
100:(28:a+6)=5
(28:a+6)=20
28:a=20-6
28:a=14
a=28:14
a=2