150k views
24 votes
How do i solve 13 + a/11 = 7

2 Answers

9 votes

Answer:

If you mean
(13+a)/(7)=7 then the answer is
a=36.

If you mean
13+(a)/(7) =7 then the answer is
a=-42.

Explanation:

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

User Stewart Robinson
by
5.2k points
8 votes

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

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.

User Qwurticus
by
5.3k points