Question

решите уравнения :
(1600+t) : 80 = 60
2000 : f - 670 = 1330
1300-(d-678) = 400

Answer 1

1. 1600 +t =4800
t=3200
2. 2000/f=2000=> f=1
3. 900=d-678
d=1578

Answer 2

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