integer operations

-1=3=2

• 2
• 4
• 5
• f

2+-3-5=

• 93
• -6
• 3
• 8

2+3-5+2-5=3-9=

• -3
• -9
• -10
• -123

2(3)4-6+9-10+10-10=

• 17
• 11
• 18
• 19

last question what is
                                         
                              5+6+178-23+12-123+13=?

• 89
• 23
• 32
• 68

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