(7200-а*200)+2000=3400

Question

(7200-а*200)+2000=3400

Answer 1

(7200-а*200)=3400-2000

(7200-а*200)=1400

а*200=7200-1400

а*200=5800

а=5800/200

а=29

Answer 2

7200-а*200=1400

а*200=7200-1400

а*200=8600

а=8600:200

а=43