Respuesta :

Space

Answer:

a = -66

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

  1. Brackets
  2. Parenthesis
  3. Exponents
  4. Multiplication
  5. Division
  6. Addition
  7. Subtraction
  • Left to Right

Equality Properties

  • Multiplication Property of Equality
  • Division Property of Equality
  • Addition Property of Equality
  • Subtract Property of Equality

Step-by-step explanation:

Step 1: Define

13 + a/11 = 7

Step 2: Solve for a

  1. Subtract 13 on both sides:                     a/11 = -6
  2. Multiply 11 on both sides:                       a = -66

Step 3: Check

Plug in a into the original equation to verify it's a solution.

  1. Substitute in a:                     13 - 66/11 = 7
  2. Divide:                                   13 - 6 = 7
  3. Subtract:                               7 = 7

Here we see that 7 does indeed equal 7.

∴ a = -66 is the solution to the equation.

ImOnReddit

Answer:

If you mean [tex]\frac{13+a}{7}=7[/tex] then the answer is [tex]a=36[/tex].

If you mean [tex]13+\frac{a}{7} =7[/tex] then the answer is [tex]a=-42[/tex].

Step-by-step explanation:

To do this question, you simplify both sides of the equation and then isolate the variable.

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