Parenthesis

Fill in the examples correctly brackets:

A) 7.9+12:3-2 =23
B) 7.9+12:3-2=75

Correct result:

a =  23
b =  75

Solution:

a=(7⋅ 9+12)/3−2=23
b=7⋅ 9+12/(3−2)=75

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