3.3 Subtract integers  (Page 3/6)

Simplify each expression:

1. ⓐ $21-13\text{and}21+(\mathrm{-13})$
2. ⓑ $\mathrm{-11}-7\text{and}\mathrm{-11}+(\mathrm{-7})$

Simplify each expression:

1. ⓐ $15-7\text{and}15+(\mathrm{-7})$
2. ⓑ $\mathrm{-14}-8\text{and}\mathrm{-14}+(\mathrm{-8})$

Simplify each expression:

1. ⓐ $6-(\mathrm{-13})\text{and}6+13$
2. ⓑ $\mathrm{-5}-(\mathrm{-1})\text{and}\mathrm{-5}+1$

Simplify each expression:

1. ⓐ $4-(\mathrm{-19})\text{and}4+19$
2. ⓐ $\mathrm{-4}-(\mathrm{-7})\text{and}\mathrm{-4}+7$

Simplify the expression:

$\mathrm{-67}-(\mathrm{-38})$

Simplify the expression:

$\mathrm{-83}-(\mathrm{-57})$

Simplify the expression:

$8-(\mathrm{-3}-1)-9$

Simplify the expression:

$12-(\mathrm{-9}-6)-14$

Simplify the expression:

$6·2-9·1-8·9.$

Simplify the expression:

$2·5-3·7-4·9$

Evaluate each expression:

$y-7\text{when}$

1. ⓐ $y=5$
2. ⓑ $y=\mathrm{-8}$