1. Розв'яжи рівняння.
а) 5х – 5,5 = 3х + 3,5;
б) 2x - (7x - 5) = 35;
в) 7x - (х + 3) = 3(2x – 1);
г)
[tex] \frac{6x - 6}{7} + x = \frac{90 + 3x}{5} [/tex]
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