The problem is to evaluate the expression $3\frac{3}{4} \times (-1\frac{1}{5}) + 5\frac{1}{2}$.

ArithmeticFractionsMixed NumbersOrder of OperationsArithmetic Operations
2025/6/3

1. Problem Description

The problem is to evaluate the expression 334×(115)+5123\frac{3}{4} \times (-1\frac{1}{5}) + 5\frac{1}{2}.

2. Solution Steps

First, convert the mixed numbers to improper fractions.
334=3×4+34=12+34=1543\frac{3}{4} = \frac{3\times4 + 3}{4} = \frac{12+3}{4} = \frac{15}{4}
115=1×5+15=5+15=65-1\frac{1}{5} = -\frac{1\times5 + 1}{5} = -\frac{5+1}{5} = -\frac{6}{5}
512=5×2+12=10+12=1125\frac{1}{2} = \frac{5\times2 + 1}{2} = \frac{10+1}{2} = \frac{11}{2}
Now, substitute the improper fractions into the expression:
154×(65)+112\frac{15}{4} \times (-\frac{6}{5}) + \frac{11}{2}
Multiply the first two fractions:
154×(65)=15×64×5=9020=92\frac{15}{4} \times (-\frac{6}{5}) = -\frac{15\times6}{4\times5} = -\frac{90}{20} = -\frac{9}{2}
Now the expression is:
92+112-\frac{9}{2} + \frac{11}{2}
Add the fractions:
92+112=9+112=22=1-\frac{9}{2} + \frac{11}{2} = \frac{-9+11}{2} = \frac{2}{2} = 1

3. Final Answer

1

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