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OpenStudy (anonymous):
Simplify 9 - {x - (7 + x)}. 16 -2x + 2 -2x + 16 2x + 2
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OpenStudy (anonymous):
Always start with the innermost parenthesis So, first you would distribute the negative after the x and would end up with 9-{x-7-x} Then the two x's end up crossing out because one is positive and one is negative 9-{7} So from here just do subtraction to get 9-7=2
OpenStudy (anonymous):
thank you @cassieWOAH
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