If x + 2y = 10 and y = 3, what is the value of x?
Category: Math · Difficulty: expert
Hint: Substitute the value of y into the equation.
Answer
4
Explanation
Replacing y with 3 gives x + 6 = 10, thus x = 4.
This is a expert math riddle — one of the harder riddles here. The answer is 4.
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