Question

Equação de primeiro grau

11x+15+2+x=10x+15

Answer 1

$\sf11x+15+2+x=10x+15$

$\sf11x+2+x=10x$

$\sf 12x+2=10x$

$\sf 12x-10x=-2$

$\sf2x=-2$

$\sf x=-\dfrac{2}{2}$

$\boxed{\boxed{\sf x=-1}}$