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Mercedes Skinner
19 May, 03:23
Simplify - (-2a + 13) + (-9a - 2) - (-7a - 3).
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Selina Mayer
19 May, 04:10
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- (-2a+13) + (-9a-2) - (-7a-3)
2a-13-9a-2+7a+3
2a-9a+7a-13-2+3
-7a+7a-15+3
=-12
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Mia Villarreal
19 May, 06:58
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- (-2a+13) + (-9-2) - (-7a-3)
- (-2a+13) - 9a-2 - (-7a-3)
Distribute the negative sign
- (-2a+13) - 9a-2+-1 (-7a-3)
- (-2a+13) + - 9a+-2+-1 (-7a) + (-1) (-3)
- (-2a+13) + - 9a+-2+7a+3
Distribute
2a+-13+-9a+-2+7a+3
Combine like terms
2a+-13+-9a+-2+7a+3
(2a+-9a+7a) + (-13+-2+3)
=-12
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