Question

2*(1,5 +3x)+3*(1,5 +x) =10,5

Answer 1

$2(1.5 + 3x) + 3(1.5 + x) = 10.5 \ 3 + 6x + 4.5 + 3x = 10.5 \ 9x = 10.5 - 3 - 4.5 \ 9x = 3 \ x = frac{1}{3}$

Answer 2

2 * (1,5 + 3x) + 3 * (1,5 + x) = 10,5
3 + 6х + 4,5 + 3х = 10,5
6х + 3х = 10,5 - 3 - 4,5
9х = 3
х = 3/9 = 1/3