Answer:
14x+8
Step-by-step explanation:
perimeter of parallelogram=2(l+b)
2(3x+9+4x-5)
2(7x+4)
14x+8
Answer:
25 + 6v
Step-by-step explanation:
Simplify the parentheses:
9 + 2(8 + 3v)
Distribute:
9 + 16 + 6v
Combine like terms
25 + 6v
Multiply bottom equation by -3 to add and eliminate y’s.
So...
5x-15y=10
+-9x+15y=18
You get -4x=28 so x=-7
Plug in to get y
5(-7)-15y=10
-35-15y=10
-15y=45
So y=-3
Check in other equation
3(-7)-5(-3)=
-21+15=-6
So x= -7 and y= -3