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3 votes
3x -9 =7x + 12
Find X

User Technowise
by
9.0k points

1 Answer

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Simple....

you have:

3x-9=7x+12

To even solve this....isolate the variable your are trying to solve for....

3x-9=7x+12
-3x -3x

-9=4x+12

-9=4x+12
-12 -12

-21=4x

Simplify.....


(-21)/(4) = (4x)/(4)


(-21)/(4) =x

Thus, your answer.

User Jithu
by
7.8k points