Answer:
x = -5/3
Step-by-step explanation:
Hope this helps!
Best of luck!♥
to get the inverse of any expression, we start off by doing a quick switcheroo on the variables and then solve for "y".

Let the number be x
3x + 5 = 20
3x = 20 - 5
x = 15/3
x=5
Answer:
x=2
Step-by-step explanation:
Isolate the variable by dividing each side by factors that don't contain the variable.
Answer:
20º
Step-by-step explanation:
Total parts
2 + 7 + 9 = 18
Value of each part given 180º in a triangle
180 / 18 = 10º
Smallest angle
2 * 10 = 20º