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LiRa [457]
3 years ago
11

What is the value of x in the equation 3x – y = 18, when y = 27?

Mathematics
2 answers:
lora16 [44]3 years ago
7 0
3x-27=18
3•9=27
So, 3•9-27=18
27-27=18
27+18
45/3=15
3•15-27=18
45-27=18
The answer is, x=15
(This might be a little complex but this way is easy for me)
atroni [7]3 years ago
3 0
<span>3x – y = 18 

We start by plugging in 27 for y. The goal is to isolate x by itself to solve for x.

3x - 27 = 18

Then we add 27 to both sides of the equation

3x = 45

Lastly, we divide both sides by 3 to finally isolate x by itself and solve.

x = 15</span>
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