Solve for r, s, t, u
u=17
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t=4\times 3-5\left(-1\right)
Consider the third equation. Insert the known values of variables into the equation.
t=12+5
Do the multiplications.
t=17
Add 12 and 5 to get 17.
u=17
Consider the fourth equation. Insert the known values of variables into the equation.
r=3 s=-1 t=17 u=17
The system is now solved.
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