# How do you solve #-\frac { 2} { 5} - ( - \frac { 3} { 4} )#?

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To solve the expression -\frac { 2} { 5} - ( - \frac { 3} { 4} ), you first need to distribute the negative sign inside the parentheses. This changes the subtraction inside the parentheses to addition. So, the expression becomes -\frac { 2} { 5} + \frac { 3} { 4}.

Next, you need to find a common denominator for the fractions, which in this case is 20. So, you rewrite the fractions with a denominator of 20:

-\frac { 2 \times 4} { 5 \times 4} + \frac { 3 \times 5} { 4 \times 5}

This simplifies to:

-\frac { 8} { 20} + \frac { 15} { 20}

Now, you can add the fractions:

-\frac { 8} { 20} + \frac { 15} { 20} = \frac { 15 - 8} { 20} = \frac { 7} { 20}

So, -\frac { 2} { 5} - ( - \frac { 3} { 4} ) simplifies to \frac { 7} { 20}.

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When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

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