Answer:
p = 1 and r = - 2
Step-by-step explanation:
Given the 2 equations
6p - 4r = 14 → (1)
p - 2r = 5 → (2)
Multiplying (2) by - 6 and adding to (1) will eliminate the term in p
- 6p + 12r = - 30 → (3)
Add (1) and (3) term by term to eliminate p
8r = - 16 ( divide both sides by 8 )
r = - 2
Substitute r = - 2 into either of the 2 equations and solve for p
Substituting into (2)
p - 2(- 2) = 5
p + 4 = 5 ( subtract 4 from both sides )
p = 1
