Solve for P, l, w, a, b
b=70
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P=2\times 20+2\times 15
Consider the first equation. Insert the known values of variables into the equation.
P=40+30
Do the multiplications.
P=70
Add 40 and 30 to get 70.
a=70
Consider the fourth equation. Insert the known values of variables into the equation.
b=70
Consider the fifth equation. Insert the known values of variables into the equation.
P=70 l=20 w=15 a=70 b=70
The system is now solved.
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