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Mathematics
25.11.2021 17:45
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Help me please please

Help me please please
Help me please please
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marieknight689
marieknight689
4,5(46 marks)

8/5 or 1.6

Step-by-step explanation:

Rise over run.

ramberson101
ramberson101
4,6(80 marks)

73

Step-by-step explanation:

Original number: XY

x = 3y - 2

10y + x = (10x + y) / 2 + 1/2

substitution: 10y + 3y - 2 = 13y - 2 = (10 * (3y - 2) + y) / 2 + 1/2

* 2 both sides and simplify: 26y - 4 = 31y - 19

31y - 26y = -4 + 19

5y = 15

y = 3

x = 7

Original number: 73

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