Answer:
10x+4y+10z Hope I helped? :')
Steps for answer!
1. Expand by distributing terms.
6x+8y+10z+4(x-y)
2. Expand by distributing terms.
6x+8y+10z+4x-4y
3. Collect like terms.
(6x+4x)+(8y-4y)+10z
4. Simplify.
10x+4y+10z
