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Mathematics 19 Online
OpenStudy (anonymous):

9z-13+3z=11

OpenStudy (sandra):

so you need to combine like terms first. 1. 12x - 13 = 11 2. 12x + 13 - 13 = 11 + 13 3. 12x = 24 4. 12x/12 = 24/12 5. x = 2

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