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kolosnyusha
@kolosnyusha
July 2022
1
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x + 0.6x + 2/3x = 680
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aleksb1
Verified answer
...
х + 6/10х +2/3х=680
30/30х + 18/30х + 20/30х = 680
68/30 х =680
х = 680 : 68/30
х = 680/1 * 30/68
х = 10/1 * 30/1
х = 10 * 30
х = 300
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...х + 6/10х +2/3х=680
30/30х + 18/30х + 20/30х = 680
68/30 х =680
х = 680 : 68/30
х = 680/1 * 30/68
х = 10/1 * 30/1
х = 10 * 30
х = 300