Solve for x: x - 3 = 4.

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Multiple Choice

Solve for x: x - 3 = 4.

Explanation:
Solving a linear equation means isolating the variable by undoing the operations on it. Here, x is decreased by 3. To undo that, add 3 to both sides. The equation becomes x = 4 + 3, so x = 7. This value makes the left side 7 − 3, which equals 4, matching the right side. So x = 7. Plugging in other numbers would give left sides like -2, -4, or -10, which do not equal 4.

Solving a linear equation means isolating the variable by undoing the operations on it. Here, x is decreased by 3. To undo that, add 3 to both sides. The equation becomes x = 4 + 3, so x = 7. This value makes the left side 7 − 3, which equals 4, matching the right side. So x = 7. Plugging in other numbers would give left sides like -2, -4, or -10, which do not equal 4.

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