Помогите!!!!!!!!!!!!!!!

Question

Помогите!!!!!!!!!!!!!!!

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Answer 1

1) х^2-10=25-10=15
2)-13- у-у-13= -26-2у;
-9у+36-24у-12-у+8= -34у+32
3)2х-10-5х-50-4=26
-3х-64=24
-3х=90
Х=-30
4)25%