cruzliliana67
cruzliliana67
12-11-2017
Mathematics
contestada
May someone please help with 33.?
Respuesta :
MathisLif3
MathisLif3
12-11-2017
2x+3y=50
x+y=21
where x,y are 2pt and 3ptrs
y=21-x
2x+3(21-x)=50
2x+63-3x=50
-x=-13
x=13
so 13+y=21 => y=8
Check 2*13+3*8=50 yuup
they had 13 2ptrs and 8 3ptrs
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