3x + 4y = 14 x = 2y - 12 cordanit plane

( - 2, 5)

Step-by-step explanation:

Given the 2 equations

3x + 4y = 14 → (1)

x = 2y - 12 → (2)

Substitute x = 2y - 12 into (1)

3 (2y - 12) + 4y = 14 ← distribute and simplify left side

6y - 36 + 4y = 14

10y - 36 = 14 (add 36 to both sides)

10y = 50 (divide both sides by 10)

y = 5

Substitute y = 5 into (2) for corresponding value of x

x = 2 (5) - 12 = 10 - 12 = - 2

Solution is ( - 2, 5)