Question

Помогите 1 пример решить

Answer 1

(3x+6x)=18*6

9x=108

x=12

2x+15x=17*10

17x=170

x=10

Answer 2

$frac{3x}{6} + frac{6x}{6} = 18$
$frac{3x + 6x}{6} = 18$
$frac{9x}{6} = 18$
$9x = 108$
$x = 12$