## anonymous one year ago http://media.education2020.com/contentengine/frames/ae1ea9b8-7435-11e4-bec8-bc764e043e0c/8101-01-03-20-03-image1.png

1. Nnesha

straight line add up to 180 degree so set it equal to 180 solve for x

2. Nnesha

$\huge\rm 3x+8+4x+10=180$ solve for x