Solve the Equation: Finding the Unknown Factor in ?(b+8) = a+8a/b

Question

Fill in the missing value:

?(b+8)=a+8ab ?(b+8)=a+8\frac{a}{b}

Video Solution

Step-by-Step Solution

To solve this problem, we'll fill in the missing value in the equation:

?(b+8)=a+8ab ?(b+8)=a+8\frac{a}{b}

Let's follow these steps:

  • Step 1: Let's represent the missing value as x x . Thus, the equation becomes x(b+8)=a+8ab x(b + 8) = a + 8\frac{a}{b} .
  • Step 2: Distribute x x on the left-hand side: xb+8x=a+8ab xb + 8x = a + 8\frac{a}{b} .
  • Step 3: To equate both sides of the equation, observe that the expression on the right can be decomposed as a+8ab a + 8\frac{a}{b} .
  • Step 4: By factoring a a in the right-hand side expression: a+8ab=a(1+8b) a + \frac{8a}{b} = a\left(1 + \frac{8}{b}\right) .
  • Step 5: For the expressions xb+8x xb + 8x and a(1+8b) a\left(1 + \frac{8}{b}\right) to be equal, the factor x x must be equal to the common factor applied to b+8 b + 8 and the factored right-hand side.
  • Step 6: Set each coefficient or common factor equal: x=ab x = \frac{a}{b} .

Therefore, the missing value in the equation is ab\frac{a}{b}.

Answer

ab \frac{a}{b}