Question

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403-(36-×)=1800
(34+×)-16=129
(×-25)+22=200

Answer 1

1)
403-36+x = 1800
x = 1800-403 + 36
x= 1433
2)
34+ x - 16 =129
x = 129 -34 + 16
x =111
3)
x- 25+22=200
x =200-22+25
x = 203