Question 72927
Given:
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2(n-7)+3=9
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First do the distributive multiplication on the left side by multiplying 2 times each of
the terms inside the parentheses to get:
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{{{2n - 14 + 3 = 9}}}
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Next add the -14 and the + 3 on the left side to get:
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{{{2n - 11 = 9}}}
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Then add 11 to both sides to eliminate the 11 on the left side and get:
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{{{2n = 20}}}
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Finally divide both sides by 2 to get the solution:
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{{{n = 20/2 = 10}}}
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Substitute 10 for n in the original equation to check the answer:
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{{{2(n-7)+3=9}}}
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{{{2(10-7) + 3 = 9}}}
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{{{ 2(3) +3 = 9}}}
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{{{6 + 3 = 9}}}
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It checks! So our answer is correct.
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Hope this helps you see ways in which you can solve basic math equations.