At what point will the lines x = -21 - 2y and x = -39 - 4y intersect?​

The co-ordinates of the intersection are simply the solution of the simultaneous set of equations.

x=4y-8

(1/2)x+ y =11

Clear fractions first: x + 2y=22

Substitute: 4y-8+ 2y = 22  => 6y = 30.

You finish it!

addition

step-by-step explanation:

ιт ιѕ (9χ^5+10)(81χ^10-90χ^5+100)

step-by-step explanation:

нσρє ι ¢συℓ∂ нєℓρ уσυ συт тσ∂α