Answer:
6-2x-2y+2 z
7-x(a+b+c)
8-y(x²+x)
9- -2a-2b-2c
10- -3(x+y)
11-10a+1 0b
12-5( x+2y)
Step-by-step explanation:
noooooooo
x=1/6
3x+4=9x+3
isolate x
1=6x
1/6=x
2/3*(7/4)=7/6 hours
