Question

(700:а+200)-600=1000 (7200-а*200)+2000=3400 (у:4-35)*120=3000 (50*у+160)-60=500

Answer 1

700:а+200=1000+600
700:а+200=1600
700:а=1600-200
700:а=1400
а=700:1400
а=0.5

7200-а*200=3400-2000
7200-а*200=1400
а*200=7200-1400
а*200=6800
а=6800:200
а=34

у:4-35=3000:120
у:4-35=25
у:4=35+25
у:4=60
у=60:4
у=15

50*у+160=500+60
50*у+160=560
50*у=400
у=400:50
у=4

Answer 2

It looks like you've provided a set of equations with variables and constants. You also seem to have provided solutions for each equation. However, I'm not entirely sure what you're asking. Could you please clarify your question or provide more context? Are you looking for an explanation of the provided equations or solutions, or do you need assistance with something specific related to these equations?