Give them the same denominator.
19/30 is what you have left
4t + 75 => 475, t = 100
Is this what you were looking for?
2. Dividing exponential expression with the same base is what the left hand fractional expression is. Z^8/Z^?=z^6. Since all the bases are the same. To get the exponential power 6 on the right we subtract the denominator’s (bottom part of the fraction) exponential power (on the left) from the numerator’s (top part) exponential power.
Then, 8 - ? = 6? 2 is the only number to make the left equal the right side. This, z^8/z^2=z^6
3936/9=440 if that is what you meant
65.8 + 13.4 = 79 .2. So the answer is c