Question

6x + 7y = 4x + 4y
Complete the missing value in the solution to the equation.
( ?,-4)

Answer 1

Hi there!

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I believe your answer is:

(6, -4)

`x = 6`

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Here’s why:

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• We would need to solve for 'x'. We are already given the 'y' value of '-4', so we would need to substitute y for '-4', and then undo operations to isolate 'x'.

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`\rightarrow 6x + 7(-4) =4x + 4(-4)\\\\\rightarrow 6x - 28 = 4x - 16\\\\\rightarrow 6x - 28 + 28 = 4x - 16 + 28\\\\\rightarrow 6x = 4x + 12\\\\\rightarrow 6x - 4x = 4x - 4x + 12\\\\\rightarrow 2x = 12\\\\\rightarrow (2x=12)/(2)\\\\\rightarrow \boxed{x = 6}`

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The '6' would replace the question mark.

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Hope this helps you. I apologize if it’s incorrect.