4x=10+5y
2x+5y=10/(-2)
--------------------
4x-5y=10
-4x-10y=-20
----------------------------
-15y=-10, 15y=10, y=10/15, y=2/3
4x=10+5×(2/3),4x=10+10/3, 4x=40/3, x=10/3
x=10/3 , y=2/3
L1=4×10/3=40/3, P1=10+10/3=40/3, L1=P1
L2=20/3+10/3=30/3=10, P2=10, L2=P2
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Answers & Comments
4x=10+5y
2x+5y=10/(-2)
--------------------
4x-5y=10
-4x-10y=-20
----------------------------
-15y=-10, 15y=10, y=10/15, y=2/3
4x=10+5×(2/3),4x=10+10/3, 4x=40/3, x=10/3
x=10/3 , y=2/3
L1=4×10/3=40/3, P1=10+10/3=40/3, L1=P1
L2=20/3+10/3=30/3=10, P2=10, L2=P2