3 years ago

Which value is the solution for this equation? 7(b - 2) = -7

Mathematics

1 answer:

Anna007 [38]3 years ago

4 0

Answer:

Step-by-step explanation:

7b -14 = -7

or b= 14-7 / 7

or b= 7/7

b is 1

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The Johnson twins were born nine years after their older sister. This year, the product of the three siblings ages is exactly 18

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According to question,

$1861+3x-18=x^3-18x^2+81x\\\\x^3-18x^2+81x-3x+18-1861=0\\\\x^3-18x^2+78x-1843=0\\\\x=19$

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