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My name is Ann [436]
3 years ago
8

10. The ratio of the measures of the sides of a

Mathematics
1 answer:
Tomtit [17]3 years ago
4 0

Answer:

42

Step-by-step explanation:

10x+15x+6x=217

31x=217

217/31=7

6x7=42

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Can someone explain this step by step please
kobusy [5.1K]

Answer:

x = - 2

y = 6

Step-by-step explanation:

The best way to do this is to put - 3x in for y in the second equation.

4x - 2(-3x) = - 20        Watch the signs. You have 2 minus signs.

4x - - 6x = -20            Change - - 6x to 6x

4x + 6x = - 20              Add

10x = - 20                   Divide by 10

x = -20/10

x = - 2

============================

Find y

y = - 3x

y = -3 * -2

y = 6

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