Question

-1=-3(3r-8)-7
Please help

Answer 1

Answer:

$- 1 = - 9r + 24 - 7$

$- 1 + 7 - 24 = 9r$

$- 30 = 9r$

$\frac{ - 30}{9} = 3.333333333333333$

hope helpful

Answer 2

Answer:

∴  The value of $r$ is $2.65$.      

Step-by-step explanation:

• In context to question asked,
• We have  to find the value of $r$ in the given equation.
• Given equation is, $-1=-3(3r-8)-7$
• While solving any algebraic equation, we have to use BODMAS rule.
• It states that " while solving any algebraic equation, first solve B-Bracket, O-Order, D-Division, M-Multiplication, A-Addition and S-Subtraction."
• By using BODMAS rule in given equation, we get

          $-1=-3(3r-8)-7$

• First, solving bracket, we get

            $-1=(-9r+24)-7$

         ∴ $-1=63r-168$

  ∴ $-1+168=63r$

          ∴  $63r=167$

              ∴ $r=\frac{167}{63}$

              ∴ $r=2.65$

• ∴  The value of $r$ is $2.65$.