Question

descubra o valor do y
(2y+4y-5)+(-3.2y+12y-1)​

Answer 1

$\left(2y+4y-5\right)+\left(-3\cdot \:2y+12y-1\right)\\\\=2y+4y-5-3\cdot \:2y+12y-1\\\\=2y+4y-3\cdot \:2y+12y-5-1\\\\=18y-3\cdot \:2y-5-1\\\\=18y-6y-5-1\\\\=12y-5-1\\\\=12y-6$

valor do y = 12y