What is 42\div 2-1-82\div 2-1 ?

The solution to 42\div 2-1-82\div 2-1 is -22

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42\div 2-1-82\div 2-1

42 \div 2 - 1 - 82 \div 2 - 1

- 22

Solution steps

42 \div 2 - 1 - 82 \div 2 - 1

Follow the PEMDAS order of operations

Multiply and divide (left to right)

42 \div 2 : 21

42 \div 2

42 \div 2 = 21

= 21

= 21 - 1 - 82 \div 2 - 1

Multiply and divide (left to right)

82 \div 2 : 41

82 \div 2

82 \div 2 = 41

= 41

= 21 - 1 - 41 - 1

Add and subtract (left to right)

21 - 1 - 41 - 1 : - 22

21 - 1 - 41 - 1

21 - 1 = 20

= 20 - 41 - 1

20 - 41 = - 21

= - 21 - 1

- 21 - 1 = - 22

= - 22

= - 22

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