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2-2-100
X
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    CC
    To solve for Y, the first thing we're going to do is we're going to subtract the 4X and then we're going to divide by 9. So 9 / 9 is going to leave us A1 Y -4 ninths X + 4. If we go back and check it Y equal -4 ninths X + 4 Y equal make it a four ninths X + 4 and we've done it correctly.