Answer:
A protractor.
Step-by-step explanation:
By taking the product of the two fractions we will see that the number that goes in the green box is a 6.
<h3>
How to add two fractions?</h3>
We only can add two fractions if we have the same denominator in both of them, here we want to transform -2/3 in an equivalent fraction, such that the denominator is 9, so we multiply both the numerator and denominator by 3.
So we need to solve:

From that, we can conclude that the number that goes in the green box is 6.
If you want to learn more about fractions, you can read:
brainly.com/question/11562149
Answer:
WINKEY + D. ...
WINKEY + SPACE. ...
SHIFT + Mouse Click on a taskbar button. ...
CTRL + SHIFT + Mouse Click on a taskbar button. ...
SHIFT + Right Mouse Click on a taskbar button. ...
SHIFT + Right Mouse Click on a grouped taskbar button. ...
CTRL + Mouse Click on a grouped taskbar button. ...
WINKEY + T.
ctrl + X = cut
ctrl + c = copy
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5x-3-7=9+2x-16
5x-10=2x-7
5x-2x=-7+10
3x=3
X=1
Answer:
x=-27
Step-by-step explanation:
-0.57x+0.27x = 8.1
-0.3x = 8.1
x = -8.1/0.3
x = -27