Question

what is the solution to 3x+y-3z from 9x-5y+z

Answer 1

Step-by-step explanation:

3x+y-3z -)1 multiply by 3

=) 9x + 3y-9z = 0. sub with 9x-5y + z -)2

9x + 3y - 9z

9x - 5y + 1z

-. +. -

=) 0x+ 8y -10z

8y= 10z

y = 10z/8 -)3

substitute in -)1

3x + 10z/8 -3z=0

10z-24z/8 = -3x

-14/8=-3x

-7/-12=x

x=7/12

substitute in -)2

9(7/12) -5(10z/8) +z =0

21/4 -50z/8 + z =0

-50z+8z/8 = -21/4

-42z=-21 × 8 /4

-42z = -42

z= -42/-42

z=1

substitute in -)3

10z/8=y

y=5/4

Verification:-

3x + y - 3z

3(7/2) + (5/4) - 3(1)

21/2 + 5/4 -3 Lcm = 4

43+5-12/4=0

48-12/4 =0

36/4 = 0

9 is not equal to 0

I don't know what went wrong

but i tried my best

Thankyou