Using Order of operations . 22/10/2023

Which operation would you do first in the following expression?

$$78\div6\times85+\left(12-10\right)$$

Evaluate       $$3\times3.5-\left(2\times1.5\right)=$$

Calculate $$\left(28+2\right)-44\div11\times2=$$

Find

Add $$\frac{2}{7}+\frac{3}{7}=$$

Add $$\frac{8}{7}+\frac{8}{7}=$$

Subtract $$\frac{2}{9}-\frac{1}{7}=$$

Subtract $$7-5\ \frac{2}{3}=$$

Add ( Write the answer in the lowest terms) $$4\ \frac{2}{9}+5\ \frac{1}{9}=$$

What is the value $$-\left|-91\right|$$