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Ksenya-84 [330]
4 years ago
13

(x+21) + (2x+9)=90 I need help for my geometry game

Mathematics
1 answer:
Digiron [165]4 years ago
3 0
Im not sure but...
(x+21) + (2x+9)=90
x+21+2x+9 = 90
3x+30 = 90
3x = 60
x = 20

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