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Chapter 1: Q22. (page 13)

Evaluate each expression.

11⋅7−9⋅8

Short Answer

Expert verified

The value of the expression (11⋅7)−9⋅8is 5.

Step by step solution

01

Step 1. Order of operations.

In order to evaluate an expression, the order of operations must be followed, which is:

  1. Evaluate the expressions inside the bracket
  2. Evaluate the powers
  3. Multiply and/or divide
  4. Add and/ or subtract

The evaluation takes place from left to right.

02

Step 2. Evaluate the expression inside the bracket.

11⋅7−9⋅8=77−9⋅8

03

Step 3. Multiply 9 by 8.

As per the order of operations, now multiply 9 by 8.

11⋅7−9⋅8=77−9⋅8=77−72

04

Step 4. Apply subtraction operation.

Subtract 72 from 77.

11⋅7−9⋅8=77−9⋅8=77−72=5

Therefore, the expression is equal to 5.

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