whats the subsitution method for: 7x+63y=12 x=3-9y

I used the U-subsitution (x + 1)^2 - 11 (x + 1) + 24 u^2 - 11u +24 (u + 3) (u - 8) should t...

Solve by the subsitution method. 2x+4y=-6 -3x+y=23 y=23+3x 2x +4(23+3x)=-6 2x +92 +12 x =-6 x=...

solve by subsitution 2x+3y=10 x+6y=32

solve using the subsitution method 4x+4y=36 4x+4y=12 If the system has no solution or an infinit...

solve by subsitution 2x+y=9 8x+4y=36

solve. using subsitution -7x-2y=-13 x-2y=11

use the subsitution method to solve the system x=y-4, x+8y=2

use the subsitution method to solve the system x=y-4, x+8y=2 A: infinite solutions B: no solutio...

use the subsitution method to solve the system 2.5x+y=-2, 3x+2y=0 A: no solution B:(-2,3) C:(3, 2...

How to do the subsitution method in math

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