Решение систем неравенств. С РЕШЕНИЕМ!

1) {z + 3 > 3z - 1
{5z - 1 > 6 - 2z
{z - 3 < 0

2) {0.7 (1 + 5z) < 0.5 (z + 1) + 3z
{2z - (2 - 1.7) > 6.7

Помогите, прошу
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