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-5w + 9
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x = (P - 2W) / 2
2w-6w+9 -4w+9 the coefficient of -4w is -4
It is: 6w-2
2L+2W=P (S2w) Subtract 2W from both sides 2L=P-2W (D2) Divide both sides by 2 L=(P-2W)/2
w=4