Answer:
12 bikes
9 tricycles
Step-by-step explanation:
x+y=21
2x+3y=51
x=-y+21
2(-y+21)+3y=51
-2y+42+3y=51
y+42=51
y=9
x=12
Answer:
He is a person with a profile on brainly. And I do believe that I have him as one of my friends*
*or not :)
Step-by-step explanation:
Answer:
middle left
Step-by-step explanation:
Answer:
-6+12t
Step-by-step explanation:
