Expression 8

Evaluate this expressions:

a) 5[3 + 4(2.8 - 3)]
b) 5×(8-4)÷4-2

Result

a =  11
b =  3

Solution:

$a=5 \cdot \ (3 + 4 \cdot \ (2.8 - 3))=11$
$b=5 \cdot \ (8-4)/4-2=3$

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