Isolating Variable Math Example 4

Follow the full solution, then compare it with the other examples linked below.

Example 4

easy
Isolate xx in x−7=3x - 7 = 3.

Solution

  1. 1
    Add 7 to both sides: x=10x = 10.
  2. 2
    The variable is now isolated.

Answer

x=10x = 10
Adding 7 undoes the subtraction of 7, isolating xx on the left side.

About Isolating Variable

Rearranging an equation by applying inverse operations until the variable stands alone on one side.

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More Isolating Variable Examples

Example 1 easy

Isolate [formula] in [formula].

Example 2 medium

Solve [formula] for [formula].

Example 3 medium

Solve for y: 3(2y - 4) + 5 = 2y + 9

Example 5 hard

Solve [formula] for [formula].

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