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Talja [164]
4 years ago
7

-4z+2=102 i dont understand this

Mathematics
2 answers:
Nezavi [6.7K]4 years ago
5 0
So basically you have to find z(isolate the z).

-4z+2=102
     -2  -2
-4z = 100
-------------     z=-25   (DO keep in mind that if you multiply two negative together 
      -4                        it would make the product positive)

Now it doesn't hurt to check the answer. All you have to do is plug in -25 for z

-4z+2=102
-4(-25)+2=102
100+2=102
102=102  <----- the equation on the left had to equal the answer on the right and 
                        it did so it means that z=-25 is correct. Hope this helps!! :)

leva [86]4 years ago
3 0
It’s negative twenty five
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According to question,

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