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13 September, 18:03

Eighth grade AA. 8 Solve a system of equations using substitution clouds Solve using substitution. 4x + 7y = 9 y = 3 (,) Submit

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  1. 13 September, 21:18
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    Answer: (-3, 3)

    Step-by-step explanation:

    4x + 7y = 9

    y = 3

    Replace "y" with "3" in the first equation to solve for x:

    4x + 7 (3) = 9

    4x + 21 = 9

    4x = - 12 subtracted 21 from both sides

    x = - 3 divided both sides by 4
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