maths homework find the value of each of the following b) [1-4-(-1-3)]÷(1-4-1-3)
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[1-4-(-1-3)]÷(1-4-1-3)
[1-4-(-1-3)]÷(-3-4)
[1-4-(-1-3)]÷ -7
[1-4-(-4)]÷ -7
[1-4+4]÷ -7
[1-0]÷ -7
1÷ -7
-7
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