7.
Решите уравнения:
1)3- (2x + 5)-(4x - 17) = 0;
2)–3. (6y - 2)+5: (3y +1)=20;
3)6.(9-2x)+7.(4x+3)=-23;
44.(2x +
5)-3-(3y-
6)5-(
4-2
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