So if you distribute 4 in the first parentheses, you get 12x+20y+8z.
Then you distribute 3 in the second parentheses. You'll get 3x-3z. That all equals 12x+20y+8z+3x-3z.
Now you have to start combining numbers with the same variable. Start with x. 12x+3x is 15x.
y has no other common variable, it's left alone.
8z-3z is 5z
All together now with the numbers in simpler form, the equation is 15x+20y+5z
Jenna's would be the right answer because when you distribute 5 in her answer you get 15x+20y+5z
Answer:
x = -21/5 = -4.200
Step-by-step explanation:
The boys drink 7/10 of a water bottle
1. Convert 2/5 into 4/10
2. Add 4/10 and 3/10
She gotta work 27 hours cuz 344.24/12.75
