# Math - PreCalc (12th Grade)

posted by
**Shawna** on
.

Use the inverse matrix to solve this system of equations:

4x+3y=7.5

7x+9z=14

4y-z=8.3

4,3,0

7,0,9

0,4,-1

posted by
**Shawna** on
.

Use the inverse matrix to solve this system of equations:

4x+3y=7.5

7x+9z=14

4y-z=8.3

4,3,0

7,0,9

0,4,-1