80 ÷4-20 ×2 = 3 of 4 ÷ 4 +30 simplification
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sry your question has some mistake
plzz check it and post it again
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Using BODMAS...
= 20-20×2= 12÷4+30
= 20-40= 3+30
= - 20= -33
= - 20+33
= +13
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