Question 1

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Quin angle formen les dues rectes?
 begin mathsize 12px style begin inline style bold r bold space bold identical to begin bold style y equals 4 over 3 times x minus 1 third end style bold space bold i bold space bold space bold s bold space bold identical to begin bold style 9 times x minus 7 times y plus 58 equals 0 end style end style end style

Format de la resposta:  angle en graus, arrodonit a la unitat: 34º

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