Solve for p in the equation 8p + 7 = 6p + 11, then p = ?

Question 1: Use Euclid's algorithm to find the HCF of 34 and 15

Step 1: Divide 34 by 15.
Dividend = Divisor $\times$ Quotient + Remainder ($0 \leq$ Remainder $<$ Divisor).
$34 = 15 \times 2 + 4$

Step 2: Divide 15 by 4.
$15 = 4 \times 3 + 3$

Step 3: Divide 4 by 3.