7. [40 ÷ {19 - 3(6 - 4-1)}]
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Step-by-step explanation:
According this question
[40÷{19-3(6-4-1)}]
[40÷{19-3}]
[40÷{20-3}]
[40÷16]
2.5
l hope you understand
manshi9334:
hy
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