решите пожайлуста уравнение (180/a+15*3)/8=54/9
(180/a+15*3)/8=54/9
(180/а+45)/8=6
180/а+45=6*8
180/а=48-45
180/а=3
а=180:3
а=60
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(180/a+15*3)/8=54/9
(180/а+45)/8=6
180/а+45=6*8
180/а=48-45
180/а=3
а=180:3
а=60