.помогите .....,................

Question

.помогите .....,................

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Answer 1

5 1/4-1 3/4= (5-1)+(1/4-3/4)= 4+(1/4-3/4)= 3+(4/4-3/4)= 3+(4-3/4)= 3 (1/4)=3 1/4