Question

x-145=457+543

Answer 1

x-145=1000

x=1000+145

x=1145

Answer 2

x=1145

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Answer 3

=>x-145=1000

=>x=1000+145

=>x=1145

Answer 4

x-145=457+543

x-145=1000

x=1000+145

x=1145

nhớ

Answer 5

x - 145 = 457 + 543

x - 145 = 1000

x          = 1145