(0.8+(-1/6))+(-2 1/30)= помогите плиз

Question

(0.8+(-1/6))+(-2 1/30)= помогите плиз

Answer 1

(0.8+(-1/6))+(-2 1/30)=
1) 0.8+(-1/6)=8/10-1/6=24/30-5/30=19/30
2) 19/30+(-2 1/30)=19/30-61/30= - 42/30= - 1 12/30= - 1 2/5

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