Question

X +5y -18z= -35 y -4z= -8
Find the solution that corresponds to z= -1
X=___ y=___ z= -1

Answer 1

X = 7, y = -12, z = -1.

Explanation:

To find the values of x and y when z = -1, first substitute z = -1 in the second equation:

y - 4(-1) = -8

y + 4 = -8

y = -12

Now substitute z = -1 and y = -12 in the first equation and solve for x:

x + 5(-12) - 18(-1) = -35

x - 60 + 18 = -35

x - 42 = -35

x = 7

Therefore, the solution that corresponds to z = -1 is:

X = 7, y = -12, z = -1.