Pls i need the answer to this asap
what is x+4z-5-3x when x=2 and z=3x

Step-by-step explanation:

I'll just go with the substitutions:

2 + 4*(3*2) - 5 - 3*2 =

= 2 + 24 - 5 - 6 =

= 26 - 11 =

= 15

step-by-step :

option (b) is correct

step-by-step explanation:

to find the solution of this system, we need to convert it into reduced row-echelon form. we have,

after applying row operations r2 -> r2/2 and r3 -> r3/3, we get,