Georgina walk 23 floor
30 - 7 = 23
There are 9 blue marbles.
Step-by-step explanation:
12÷4=3
3×3=9
In standard form the answer will be if you go by (Ax+by=c )then I must say it's 3x-7y=9
a) 2/5(n)=6 n=15
b) 4/7(x)=16/3 x=28/3 x=9.33333 x=9 1/3
any option for b works
i hope this is right and helps
