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Find x when y is -7 Rule: y=91-14x Doesn't Exist

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Final answer:

To solve for x given y = -7 in the rule y = 91 - 14x, rearrange the equation to isolate x and simplify. You'll find that x equals 7.

Step-by-step explanation:

To find x when y is -7 using the rule y = 91 - 14x, substitute y with -7 and solve for x.

-7 = 91 - 14x

Now, you want to isolate the variable x, so you'll move the constant term to the left side:

-7 - 91 = -14x

Combine the constants:

-98 = -14x

Then, divide both sides by -14 to solve for x:

x = ·

x = 7

Therefore, x equals 7 when y is -7 given the rule y = 91 - 14x.

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