Find y
Find y:
Expand Hint
Use basic algebra to solve to solve for unknowns.
Hint 2
Use substitution to first solve for
$$x$$
.
Looking at the three equations, the variable
$$x$$
appears every time, meaning we should describe both the
$$y$$
and
$$z$$
variables in terms of
$$x$$
. Analyzing the second equation:
$$$x+z=0\rightarrow z=-x$$$
Analyzing the third equation:
$$$x-y=-5\rightarrow y=x+5$$$
Substituting the new equations into the original first equation:
$$$x+(x+5)+(-x)=2$$$
Solving for
$$x$$
:
$$$x=2-5=-3$$$
Since we now only have one unknown variable, we can solve for
$$y$$
using the third equation:
$$$y=-3+5=2$$$
2
Time Analysis
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Similar Problems from FE Sub Section: NA
Similar Problems from FE Section: NA