Solve for a, b
a=5
b=15
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a=1+4
Consider the first equation. Add 4 to both sides.
a=5
Add 1 and 4 to get 5.
b-4\times 5+5=0
Consider the second equation. Insert the known values of variables into the equation.
b-20+5=0
Multiply -4 and 5 to get -20.
b-15=0
Add -20 and 5 to get -15.
b=15
Add 15 to both sides. Anything plus zero gives itself.
a=5 b=15
The system is now solved.
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