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Aleksandr-060686 [28]
3 years ago
5

25 decreased by 1/5 of a number is 18

Mathematics
1 answer:
kozerog [31]3 years ago
8 0
25-(1/5)x=18

x=35

Idk if this is what you're looking for, but this is what I think you want.
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Step-by-step explanation:

In solving simultaneous equations, there are three methods, we have the elimination method, substitution method or graphical method. But for the purpose of this question, we would be using Elimination method.

5y-4x =-7 Equation 1

2y+4x=14 Equation 2

Since x has the same coefficient, it's easy to eliminate by adding up the two equations

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