2 Answers

Duburcqa · Answer 1 · 2017-12-07T20:32:48+0000

you have to isolate the variable so you add eight to both sides x - 8 = 4 +8 +8 now add the other side. remember what is done to one side of the equal sign must be done to the other side. x = 4 + 8 x = 12

Seb Thiebaud · Answer 2 · 2017-12-09T18:37:53+0000

This is really easy.
x-4=8
what it really is asking you is the value of x
Isolate x
take 4 to the other side. not -4 but positive 4
x=12

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