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Does x satisfy the equation?
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Learn it Substitute the value into both sides. If both sides give the same number, it is a solution.
Example: Is x = 3 a solution of $4x - 5 = 2x + 1$?
- Left: $4(3) - 5 = 7$.
- Right: $2(3) + 1 = 7$.
- Both are 7, so yes.
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