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13-12-2014
Mathematics

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three times the sum of a number and 3 is -18 (equation )

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apologiabiology apologiabiology

13-12-2014

so 3 times x+3 is -18 so

3(x+3)=-18
so distribute
3x-9=-18
add 9 to both sides
3x=-27
divide both sides by 3
x=-9

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