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9x-6a=-7,find x when a =-7

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Answer:


Explanation:

Plug in -7 for the variable a.

9x - 6(-7) = -7

Follow PEMDAS. Note the equal sign, what you do to one side, you do to the other. Isolate the variable, x.

Multiply -6 with -7

9x - 6(-7) = -7

9x + 42 = -7

Isolate the variable x. Subtract 42 from both sides

9x + 42 (-42) = -7 (-42)

9x = -49

Divide 9 from both sides

(9x)/9 = (-49)/9

x = (-49)/9

x = ~5.44 (rounded)


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