Solve for x: x + 7 = 15.

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Prepare for the Grade 6 FAST Mathematics Test. Study with comprehensive questions, solutions, and tips to maximize your performance and excel in your exam!

Multiple Choice

Solve for x: x + 7 = 15.

Explanation:
To solve a simple equation like x plus 7 equals 15, you remove the added 7 from the left side by subtracting 7 from both sides. This leaves x by itself: x equals 15 minus 7, which is 8. You can check by plugging back: 8 plus 7 equals 15, which is true. The other options don’t fit: 7 would give 7 plus 7 equals 14, not 15; 15 would give 15 plus 7 equals 22; negative 7 would give -7 plus 7 equals 0.

To solve a simple equation like x plus 7 equals 15, you remove the added 7 from the left side by subtracting 7 from both sides. This leaves x by itself: x equals 15 minus 7, which is 8. You can check by plugging back: 8 plus 7 equals 15, which is true. The other options don’t fit: 7 would give 7 plus 7 equals 14, not 15; 15 would give 15 plus 7 equals 22; negative 7 would give -7 plus 7 equals 0.

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