Question

вопрос на фото.........

a5a4432343f0d6004380b3c876bad980.docx

Answer 1

$\frac{5x - 3}{2} + \frac{2x + 4}{5} = 8 \: \: | \times 10\\ 5(5x - 3) + 2(2x + 4) = 80 \\ 25x - 15 + 4x + 8 = 80 \\ 29x = 80 + 7 \\ 29x = 87 \\ x = 87 \div 29 \\ x = 3$