How do you solve 90-:6+4*8-19?

Aug 10, 2016

$18$

Explanation:

Count the number of terms first.
Each one must simplify to a single answer and the answers can be added or subtracted in the LAST step.

$\textcolor{red}{90 \div 6} \textcolor{b l u e}{+ 4 \times 8} \textcolor{m a \ge n t a}{- 19} \text{ has 3 terms}$

=$\textcolor{red}{15} \textcolor{b l u e}{+ 32} \textcolor{m a \ge n t a}{- 19}$

=$18$

Notice that we can work in different terms at the same time.
The calculations within different terms are independent of each other.