Since a and 5 aren't like terms, you would write the expression as 
Answer
s = 11
Step-by-step explanation:
Find the value of S:
57 + s = 68
Substract 57 from both sides of the equation
s = 68 - 57
s = 11
I think the answer is D
Hope it helps
4/7 = 8/14 = 12/21 = 16/28, etc
Answer:
Step-by-step explanation:
out of 180 you take out 140 so you get 40' for x and its a right triangle so out of 180-40' and 90' you will get 180-130=50' for y