If you're asking if you can subtract this, for example:
x³ - x²
No. They must have the same exponent to be compatible. For example:
4x² - x² = 3x²
C + t = 75......c = 75 - t
6c + 3t = 312
6(75 - t) + 3t = 312
450 - 6t + 3t = 312
-6t + 3t = 312 - 450
-3t = - 138
t = -138/-3
t = 46 <=== 46 cups of tea were sold
c = 75 - t
c = 75 - 46
c = 29 <=== 29 cups of coffee
84 degrees.
The two angles are alternate interior.
The answer is no solution
Volume = πr²h
circumference = 2πr = 2, Height, h = 204
2πr = 2
πr = 2/2
πr = 1
r = 1/π
Volume = πr²h = π*(1/π)² * 204 = 204/π
Volume = 204/π cubic length or ≈ 64.935 cubic length
I hope this helps.