Respuesta :
Answer:
Gggggg
Step-by-step explanation:
Bh H hjjhбичар сук в оригинале xdddd
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Answer:
[tex] - 30 + 8r = - 7( - 3r - 3) + 4r \\ - 30 + 8r = 21r + 21 + 4r \\ - 30 - 21 = 25r - 8r \\ - 51= 17r \\ r = \frac{ - 51}{17} \\r = 3 \\ thank \: you[/tex]