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14 July, 13:08

Solve system by substitutition or elimination.

9x-8x=9

-18x+16y=-18

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  1. 14 July, 13:12
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    1. 9x-8y=9

    2. - 18x+16y = - 18 ⇒ - 9x+8y = - 9 ⇒ 9x-8y=9

    as we see both equations are same, it means the lines overlap and there is infinite number of solutions
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