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OpenStudy (anonymous):
7 - (2x + 11) + 3(3 - x) = 20
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OpenStudy (anonymous):
once again, distribute a negative one outside the 2x+11, and the 3 to 3-x so: 7-2x-11+9-3x=20. Add them up and solve for x.
OpenStudy (anonymous):
7 - (2x + 11) + 3(3 - x) = 20 x=-3
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