Respuesta :
Answer:
l = 15 and w = 25
Step-by-step explanation:
[tex]l - w = - 10[/tex]
[tex]l + w = 40[/tex]
Adding both equations
[tex]2l = 30[/tex]
[tex]l = 15[/tex]
subtracting both equation
[tex]2w = 50[/tex]
[tex]w = 25[/tex]
Hope it helps..........
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