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Troyanec [42]
3 years ago
15

20 POINTS

Mathematics
1 answer:
shepuryov [24]3 years ago
6 0
83 + 96 + 88 = 267

267 / 3 = 89

(89 + x) / 2 = 90

Multiply both sides by 2.

89 + x = 180

Subtract 180 - 89.

x = 91
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