m/6+m/9=1/15+m/3-1/6
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(3m + 2m)/18 = (2 + 10m – 5)/30
5m/18 = (10m – 3)/30
30·5m = 18·(10m – 3)
150m = 180m – 54
150m – 180m = – 54
–30m = –54 (×(–1))
30m = 54
m = 54/30
m = 9/5
5m/18 = (10m – 3)/30
30·5m = 18·(10m – 3)
150m = 180m – 54
150m – 180m = – 54
–30m = –54 (×(–1))
30m = 54
m = 54/30
m = 9/5
luizafashion12:
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