Answer:10
Step-by-step explanation:
Answer:
v See below. v
Step-by-step explanation:
LM = MN
11x - 21 = 8x + 15

x = 12
LM = 11(12) - 21 = 132 - 21 = 111
MN = 8(12) + 15 = 96 + 15 = 111
LN = 111 + 111 = 222
Answer:

Step-by-step explanation:
When choosing equations to write, make sure you choose a pair that allow you to isolate a variable and solve for it.
Sample solution:



Answer:
X=2
Step-by-step explanation:
When x is 2, y=3 for both equations