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13 votes
Ok- i need help!
what's this ......
6(x+9)=9

User Joel Wietelmann
by
3.3k points

2 Answers

25 votes
25 votes

Answer:


x=-(15)/(2)

Explanation:

Start by distributing the 6 to each of the terms in the parentheses:

6(x)+6(9)=9

6x+54=9

Subtract 54 from both sides

6x+54-54=9-54

6x=-45

Divide both sides by 6

x=-45/6

Divide the fraction by 3/3 since it is the greatest common factor of 45 and 6. Note we can only do this since 3/3 is equivalent to 1, so we are essentially dividing the fraction by 1.

x=-15/2

User Aledujke
by
3.0k points
25 votes
25 votes


\huge \boxed{\tt x= - 7.5}

Explanation:

  • First write the equation


\to \sf6(x+9)=9


\\ \\

  • Divide the 6 to 9 which is multiplying (x + 9) .


\to \sf(x+9)= (9)/(6)


\\ \\

  • Divide numerator and denominator in right side by 3


\to \sf(x+9)= (3)/(2)


\\ \\

  • Subtract 3/2 with 9


\to \sf x= (3)/(2) - 9


\\ \\


\to \sf x= (3 - 18)/(2)


\\ \\

  • After subtracting we will get our product as - 15/2


\to \sf x= ( - 15)/(2)


\\ \\

Round of -15 / 2 to get product as - 7.5


\to \sf x= - 7.5

Verification:

6(x+9)=9

6(- 7.5 +9) = 9

6 × 1.5 = 9

9 = 9

Hence verified ~☆