Answer:
The solution of the given system is given as L = -12, d =16.5
Step-by-step explanation:
7 L+ 5.5 d = 6.75
L + d = 4.5
From (2), we get:
L + d = 4.5
⇒ d = 4.5 - L
Substitute the above value of d is the above first equation:
7 L+ 5.5 d = 6.75 ⇒ 7 L+ 5.5 (4.5 - L) = 6.75
⇒ 7 L + 24.75 - 5.5 L = 6.75
or, 1.5 L = 6.75 - 24.75 = -18
or, L = -18/1.5 = 12
or, L = -12
Now, d = 4.5 - L = 4.5 - (-12) = 16.5
or, d = 16.5
Hence, the solution of the given system is given as L = -12, d =16.5
