DEEWILL5100
01.08.2019 •
Mathematics
Find the value of 4x-8 given that 3x-2=7
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Ответ:
In order to simplify 4x-8, we need a value of x.
In order to find one, we will just isolate x in the equation that we are given.
We have:
3x-2=7
Add two to both sides
3x=9
Divide both sides by 3
x=3
Now, we'll plug 3 in to 4x-8. Therefore, we have:
4(3)-8 =
12-8 =
4
Hope this helps!
Ответ:
9x+7y=46, 7x+8y=24
Step-by-step explanation: