Simplify 4x-5.2y+6y+7.9x-8x

$4 x - 5.2 y + 6 y + 7.9 x - 8 x$

Add $4 x$ and $7.9 x$ .

$11.9 x - 5.2 y + 6 y - 8 x$

Subtract $8 x$ from $11.9 x$ .

$3.9 x - 5.2 y + 6 y$

Add $- 5.2 y$ and $6 y$ .

$3.9 x + 0.8 y$