Question

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Answer 1

Resposta:

$2x + 4x + 30 = 180 \\ 6x = 150 \\ x = \frac{150}{6 } = \frac{50}{2} = 25$

$3x - 15 = x + 35 \\ 2x = 50 \\ x = 25 \\ 3x - 15 = \alpha \\ 75 - 15 = \alpha \\ \alpha = 60$

$4x - 25 + x = 90 \\ 5x = 115 \\ x = 23$