Решите уравнение:
1. а) 3х = 15; 2. а) 2(2 + у) = 19 – 3у;
б) 4х – 2 = 2х + 6; б) −3(3b + 1) – 12 = 12;
в) 11 + 5х = 55 + 3х; в) −2(2 – 5х) = 2(х – 3) – 5;
г) − 8х – 17 = 3х – 105. г) – 4,92у – (0,08у + 5,12) = − 0,88 – у.

по действиям
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