PLEASE ANSWER THESE QUESTIONS! I WILL GIVE YOU BRAINLIEST AND THANK YOUR ANSWERS.

Add the fractions, and simply the result to lowest terms. 2/3 + 2/7= ?

Acompany that manufactures and sells guitars made changes in their product range. from the start they had 20 models. then they reduced the number of models to 15. as a result, the company enjoyed a 10% increase in turnover. - how much did the stock level change? in (%)

Gh bisects fgi. find the measure of hgi •15° •21° •10° •8°