3y (2y - 7) - 3 (y - 4) - 63 for y = -2
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Step-by-step explanation:
3×-2(2×-2-7)-3(-2-4)-63
= -6(2×-2-7)-3(-2-4)-63
= -6(-2-7)-3(-2-4)-63
= 12+(-42)-6+12-63
= -30-6+12-63
= -36+12-63
= -24-63
= -84
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