SOLUTION: 84=3/4x+30 find x.

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Question 238416: 84=3/4x+30
find x.
Answer by JenniferTutors(83) About Me  (Show Source):
You can put this solution on YOUR website!
For this problem:
%283%2F4%29x%2B30=84
You want to get x by itself, first subtract 30 from both sides of the equation:
%283%2F4%29x=84-30
%283%2F4%29x=54
Next, to get x by itself you would multiply the reciprocal of 3/4 to both sides of the equation:
%284%2F3%29%283%2F4%29x=54%284%2F3%29
Now, your left with x by itself, but combine the other like terms:
%2854%2F1%29%284%2F3%29=216%2F3
x=216%2F3
x=72