Combine and .

Combine and .

Simplify each term.

Combine and .

Move to the left of .

Combine and .

Apply the distributive property.

Simplify.

Multiply .

Multiply by .

Multiply by .

Multiply .

Multiply by .

Multiply by .

To write as a fraction with a common denominator, multiply by .

Multiply and .

Multiply by .

Combine the numerators over the common denominator.

Reorder and .

Add and .

Factor out of .

Cancel the common factors.

Factor out of .

Cancel the common factor.

Rewrite the expression.

To write as a fraction with a common denominator, multiply by .

Multiply and .

Multiply by .

Combine the numerators over the common denominator.

Multiply by .

Combine.

Multiply by .

Combine.

Reorder the factors of .

Multiply by .

Reorder the factors of .

Multiply by .

Combine the numerators over the common denominator.

Multiply by .

Multiply by .

Subtract from .

Multiply by .

Simplify (1/4z^2-1/5z)-(-3/20z^2+1/10z-13/20)