First convert to an improper fraction: -5 2/7 = -37/7 -2 1/7 = -15/7 So now you have -37/7 / -15/7 When you divide with a fraction, you just flip the numerator and denominator of the divisor and multiply instead, so -37/7 * -7/15 = 37/15 which would be in "improper" form. To convert it to mixed number form it would be 2 7/15
The smallest angle is a which is 35 and from 7 to 35 it X5 so times 18 and 11 by 5 as well which comes to the ratio 35:90:55 , you can tell this is right because angles in a triangle add up to 180 , 35+90+55 =180
