7, 3+x2; x=2, -15, 3-2x; x=9, 2, 2x2+4;x=-1, -17, x-15;x=-2, 33, 2x2-2+3;x=4, -33, 8-5x3-1;x=2, 0, 5=x=5.

EVALUATING ALGEBRAIC EXPRESSION

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