We need to evaluate the following expression: $(\frac{1}{2}) + (\frac{2}{3}) - (-1\frac{1}{6})$

ArithmeticFractionsAdditionSubtractionMixed NumbersImproper FractionsSimplificationArithmetic Operations
2025/5/19

1. Problem Description

We need to evaluate the following expression:
(12)+(23)(116)(\frac{1}{2}) + (\frac{2}{3}) - (-1\frac{1}{6})

2. Solution Steps

First, we rewrite the expression without the parentheses and plus signs, remembering that subtracting a negative is the same as adding:
12+23(116)=12+23+116\frac{1}{2} + \frac{2}{3} - (-1\frac{1}{6}) = \frac{1}{2} + \frac{2}{3} + 1\frac{1}{6}
Next, we convert the mixed number 1161\frac{1}{6} to an improper fraction:
116=1×6+16=6+16=761\frac{1}{6} = \frac{1 \times 6 + 1}{6} = \frac{6+1}{6} = \frac{7}{6}
So the expression becomes:
12+23+76\frac{1}{2} + \frac{2}{3} + \frac{7}{6}
Now, we find a common denominator for the fractions. The least common multiple of 2, 3, and 6 is

6. We rewrite each fraction with a denominator of 6:

12=1×32×3=36\frac{1}{2} = \frac{1 \times 3}{2 \times 3} = \frac{3}{6}
23=2×23×2=46\frac{2}{3} = \frac{2 \times 2}{3 \times 2} = \frac{4}{6}
76\frac{7}{6} remains the same.
Now we can add the fractions:
36+46+76=3+4+76=146\frac{3}{6} + \frac{4}{6} + \frac{7}{6} = \frac{3+4+7}{6} = \frac{14}{6}
Finally, we simplify the fraction. We can divide both the numerator and the denominator by their greatest common divisor, which is 2:
146=14÷26÷2=73\frac{14}{6} = \frac{14 \div 2}{6 \div 2} = \frac{7}{3}
We can also convert this improper fraction to a mixed number:
73=213\frac{7}{3} = 2\frac{1}{3}

3. Final Answer

73\frac{7}{3} or 2132\frac{1}{3}

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