6x+7y=4x+4y (? , -4) Complete the missing value in the solution to the equation.
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Answer:
(6, - 4)
Step-by-step explanation:
If (?, - 4) is solution of equation 6x + 7y = 4x + 4y , then
6x + 7(- 4) = 4x + 4(- 4)
6x - 4x = 28 - 16 ⇒ x = 6
(6, - 4)
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