Answer:
6
Step-by-step explanation:
You need to divide it.Then you get 18 divided by 3.Which is 6
Answer:
just add them
Step-by-step explanation:
Answer: a. 19
Step-by-step explanation:
it only has 1 and itself
÷

= 7, but Im not 100% sure if thats right. You should pick someone else's answer.
Answer:
D. X=-3, y=4
Step-by-step explanation:
-2x+3y=18 equation 1
x=-y+1 equation 2
-2(-y+1)+3y=18 replace x value of equation 2 into equation 1
2y-2+3y=18
5y=20
y=4
solve for x by replacing y value into either equation.
x=-y+1
x=-4+1
x=-3