Maggie = x years old
Demarco = x + 4
Anna = 3*Demarco
Anna = 3*(x + 4)
Anna = 3x + 12
Hope this helps!
The first sentence → x - 2y = -1
the second one → 3x - 2y = -3
multiply the first one by -1
you can get → -x + 2y = 1
plus two sentences together
you can get → 2x = -2
so you are able to know that x = -1
and y = 0
Answer:
a
Step-by-step explanation:
Answer:
its 5 and 1/2
Step-by-step explanation:
You would multiply 4 by 72 then u multiply 4 * -6 then after that you would add 15