What is the positive solution to x + 45 = 48?

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Multiple Choice

What is the positive solution to x + 45 = 48?

Explanation:
Solving a simple linear equation means isolating the variable by undoing the operations on it. Here, x is increased by 45 to reach 48. Undo that addition by subtracting 45 from both sides, which gives x = 48 − 45 = 3. This is the positive solution because 3 plus 45 equals 48. Quick check: 3 + 45 = 48 confirms it works. Any other number wouldn’t satisfy the equation (for example, 0 would give 45, 1 would give 46), and there is only one solution in this straightforward one-step case.

Solving a simple linear equation means isolating the variable by undoing the operations on it. Here, x is increased by 45 to reach 48. Undo that addition by subtracting 45 from both sides, which gives x = 48 − 45 = 3. This is the positive solution because 3 plus 45 equals 48. Quick check: 3 + 45 = 48 confirms it works. Any other number wouldn’t satisfy the equation (for example, 0 would give 45, 1 would give 46), and there is only one solution in this straightforward one-step case.

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