6=267a - 47b. We have figured out that b = (12 + 47a)/147. So we substitute: 6=267a - 47((12 + 47a)/147). We figure we can multiply both inside numbers by 47 and divide them by 147. Becomes 6=267a...

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6=267a - 47b. We have figured out that b = (12 + 47a)/147. So we substitute: 6=267a - 47((12 + 47a)/147). We figure we can multiply both inside numbers by 47 and divide them by 147. Becomes 6=267a...

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