Question

15y+10z+5y-20y-10z+5x+8x-10x​

Answer 1

Answer:

15y+10z+5y-20y-10z+5x+8x-10x

20y-20y+10z-10z+13x10x

3z

Answer 2

Answer:

$\huge \underline \mathrm \blue{Answer}$

$15y+10z+5y-20y-10z+5x+8x-10x \\ =15y+5y-20y+10z-10z+5x+8x-10x \\ =20y-20y+0+13x-10x \\=0+0+3x \\= 3x$