Solve for the variables in the following equations: a) 15 + a = 28 b) b − 35 = 27 c) 3c = 69 d) d/8 = 12 e) 3e + 14 = 26 f) 2b − 10 = 40

$$a = 13$$

The value of $a$ is $\boxed{\text{13}}$.

$$b = 62$$

The value of $b$ is $\boxed{\text{62}}$.

$$c = 23$$

The value of $c$ is $\boxed{\text{23}}$.

$$d = 96$$

The value of $d$ is $\boxed{\text{96}}$.

$$e = 4$$

The value of $e$ is $\boxed{\text{4}}$.

$$b = 25$$

The value of $b$ is $\boxed{\text{25}}$.