Solve for r, n, s, t
t=107
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s=7+8\times 8+4\times 9
Consider the third equation. Insert the known values of variables into the equation.
s=7+64+36
Do the multiplications.
s=71+36
Add 7 and 64 to get 71.
s=107
Add 71 and 36 to get 107.
t=107
Consider the fourth equation. Insert the known values of variables into the equation.
r=8 n=9 s=107 t=107
The system is now solved.
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