3x-9 =-18
3x + 6y=27 substitution problem

Solve for x in the first equation then use it in the second one to solve for y

x= -3

y= 6

Step-by-step explanation:

3x-9= -18 --> 3x= -9 --> x= -9/3 --> x= -3

3(-3)+6y=27 --> -9+6y=27 --> 6y=36 --> y=36/6 --> y=6

11

step-by-step explanation:

32.50-7.50=25

225/25=11