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Rufina [12.5K]
3 years ago
14

Two times the sum of a number and 4 equals 7.

Mathematics
1 answer:
soldier1979 [14.2K]3 years ago
8 0

Answer:

-1/2 or -.5

Step-by-step explanation:

2(n + 4) = 7

2n + 8 = 7

2n = -1

n = -1/2

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if everything in a store is 20% off and the discounted price of an item is $18.00 what is the regular price?
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I need help on this specific equation: 10x+1=3x+9
Yuri [45]
Well, first you'd have to get the x by it's self.
10x+1=3x+9
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Each time you change something on one side, you must do the same to the other side. T find the value of a variable in an equation, simple seclude it so it's on it's own without number to make things confusing.
The answer was x=8/7 btw.
3 0
3 years ago
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