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2022-08-02 20:12:55
a) a35
b)a12 . a9 = a21
c) 215 . 212 = 227
2022-07-28 10:12:49
2022-07-27 15:22:44
2022-07-27 15:20:31
27.x+23.x = 100
x. (27+23) = 100
x.50=100
x=100 :50
x = 2