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pashok25 [27]
3 years ago
5

Need help please and thank you

Mathematics
1 answer:
mart [117]3 years ago
4 0
(10x+21) + (13x) = 90
23x + 21 = 90
-21 -21
23x = 69
/23 /23
x = 3

10(3) + 21
30 + 21 = 51
FEH = 51

13(3) = 39
DEH =39







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