By replacing you get:
5*7-2*11+3*(-1) = 35-22-3= 10
so the answer is 10.
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One coordinate that is 7 units away from (2,-7) is (2,0). (2,0) is 7 units to the right of (2,-7)
Another coordinate is (9,-7). This one also works.
ab+bc>can is the correct answer
