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earnstyle [38]
2 years ago
6

The sum of 5.5 and twice a number is -10

Mathematics
2 answers:
elena-s [515]2 years ago
3 0
The answer is n= 7.75.
elena-s [515]2 years ago
3 0

Answer:

n=-7.75

Step-by-step explanation:

Based on the given conditions, formulate: 5.5+2×X=-10

Rearrange unknown terms to the left side of the equation:2x=-10-5.5

Calculate the sum or difference:2x=-15.5

Divide both sides of the equation by the coefficient of variable:x=-15.5/2

Multiply both the numerator and denominator with the same integer:-155/20

Cross out the common factor:-31/4

get the result:  -7.75

Answer: -7.75

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