Question

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Answer 1

1) х+385=2000

  х=2000-385

   х=1615

2) х-4200=18900

   х=18900+4200

   х=23100

3) 20500-х=12730

  х=20500-12370

  х=8130

Answer 2

1) x+385=2000

x=2000-385

x=1615

2) y-4200=18900

y=18900+4200

y=23100

3) 20500-z=12730

z=20500-12730

z=7770