How do I do math expressions?

1 answer:

3 0

1.Know the order of operations. (pemdas)
2. Start by solving all of the terms in parentheses.
3.Solve the exponents.
4.Solve the multiplication problems in your expression.
5.Move on to division
6.Add.
7.Subtract.
8.Review your expression.

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1 year ago

Add.

Sidana [21]

Answer:

1 $\frac{7}{20}$

Step-by-step explanation:

1. Convert the mixed number to an improper fraction to match the rest of the problem (this just makes it easier for now, the answer will still be a mixed number)

-1 $\frac{4}{5}$ becomes $\frac{9}{5}$

2. Re-write the new equation. When there is a "+" in front of a set of parentheses the expression doesn't change aside from removing the plus signs.

The new equation becomes

$\frac{9}{5} - \frac{1}{4} -\frac{1}{5}$

3. Calculate. Just work out the new expression.

The answer is $\frac{27}{20}$

4. Convert to a simplified mixed decimal.

27 goes into 20 once with seven left over, making the answer 1 $\frac{7}{20}$

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