Answer:
- x = 31 - 2y - 3z
- y = (31 - x - 3z)/2
- z = (31 -x -2y)/3
Step-by-step explanation:
Subtract the terms not containing the variable of interest, then divide by the coefficient of the variable.
x = 31 -2y -3z . . . . . the coefficient of x is 1, so we're done
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2y = 31 -x -3z
y = (31 -x -3z)/2
__
3z = 31 -x -2y
z = (31 -x -2y)/3
