exam Maths Puzzle Numerical Ability

Can you help me with this problem?

Find three consecutive integers whose sum is 321

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exam Other Question

Find the y-intercept and the x-intercept for an equation.

3x - 2y =6

What is the y-intercept?

What is the x-intercept?

I figured the y-intercept would be (0,3), but I am stuck on what is the x-intercept?
Solve for x.

1/x + 1/x+16 = 1/15

The solutions are x = ________.