3p + 3q = 36

5p + 39 = 40

P = ?

Q=?

3p + 3q = 36 equation 1

5p + 39 = 40 equation 2

subtracting 39 both sides of equation 1.

5p + 39 - 39 = 40-39

5p = 1 ⇒ 5p/5 = 1/5 ⇒ p = 1/5

putting value of p in equation 1.

3 (1/5) + 3q = 36

3/5 + 3q = 36 equation 3

subtracting 3/5 both sides equation 3 becomes.

3q = 36 - 3/5

3q=177/5 equation 4

dividing 3 both sides of equation 4

q=59/5