3x%–7%=17% x%=C8% C3x%–5%=10% % x%=6% % 6%=4x%C%10% x%=6% x%=18% % x%=C5% % x%%=1% % 6x%–1%=5% x%=0% 5%C%2x%=12% % 8%–3x%=%8% % Cx%+5%=10% 2x%+3%=11% x%=4% ...
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