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mote1985 [20]
3 years ago
15

The difference between a number and four is multiplied by negative five. The result is twenty. What is the number?

Mathematics
2 answers:
spayn [35]3 years ago
4 0
(n-4)*-5=20           Answer is  n= 8
natima [27]3 years ago
3 0
-5(n - 4) = 20

Distribute the -5 through the parenthesis
-5n + 20 = 20

subtract 20 from both sides
-5n = 0

Divide both sides by -5
n = 0

CHECK
-5( 0 - 4) =
-5(-4) = 20
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Read 2 more answers
Como resolver y=1-2.5
oksian1 [2.3K]

I don't really speak Spanish but I'll guess that says

 How do I solve  y = 1 - 2.5

Unless I'm missing something, there's not even any algebra here.  

The way we subtract a bigger number from a smaller number is first we subtract the smaller number from the bigger number the regular way, then we prepend a minus sign.


y = 1 - 2.5 = -(2.5 - 1) = -1.5



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