Question

Решите последние 2 пж

Answer 1

2.7+1.9x=2x+1.5
1.9x-2x=1.5-2.7
-0.1x=-1.2
x=12
$frac{13}{18}x + 13 = frac{7}{12} x + 8 \ 26x + 468 = 21x + 288 \ 26x - 21x = 288 - 468 \ 5x = - 180 \ x = - 36$