Problem

8 x [ 6 + 4 x (2 + 12) + 8] – 1 = _____
Procedure

Solve the inside group first:

 8 x [ 6 + 4 x (2 + 12) + 8] – 1 = 8 x [ 6 + 4 x 14 + 8] – 1

Solve the outer group:

Multiplication followed by addition

 8 x [ 6 + 4 x 14 + 8] – 1 = 8 x [ 6 + 56 + 8] – 1

8 x [ 6 + 56 + 8] – 1 = 8 x 70 – 1

Finish the operation:

Multiplication followed by subtraction

 8 x 70 – 1 = 559
Solution

8 x [ 6 + 4 x (2 + 12) + 8] – 1 = 559

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