Question

efectueaza:
a) {[42×(6-100:25)+24]-8}:5=
b) 12-10:{1+3×[(57-60:4×2):3+21]:10}=
va rog frumos.

Answer 1

a) {[42×(6-100:25)+24]-8}:5=
{|42x(6-4)+24|-8}:5=
|(42x2+24)-8|:5=
|(84+24)-8|:5=
(108-8):5=
100:5=20

b)12-10:{1+3×[(57-60:4×2):3+21]:10}=
12-10:{1+3x|(57-15x2):3+21|:10}=
12-10:{1+3x|(57-30):3+21|:10}=
12-10:|1+3x(27:3+21):10|=
12-10:|1+3x(9+21):10|=
12-10:(1+3 x 30:10)=
12-10:(1+90:10)=
12-10:(1+9)=
12-10:10=
12-1=11

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