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17 July, 14:02

If you were to use the substitution method to solve the following system, choose the new equation after the expression equivalent to y from the first equation is substituted into the second equation.

8x - y = - 9

4x - 3y = - 22

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  1. 17 July, 14:23
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    8x - y = - 9

    8x + 9 = y ... so we sub in 8x + 9 for y in the 2nd equation

    4x - 3y = - 22

    4x - 3 (8x + 9) = - 22 <===
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