The values of x and y that satisfy this system of equations are 10 and 5 respectively
Simultaneous equation
Given the system of equations
x + y = 20
3x - 3y = 30
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x + y = 20
x - y = 10
Add the equations
2x = 20 + 10
2x = 30
x = 30/2
x = 15
Substitute
x -y = 10
15 - y = 10
y = 5
Hence the values of x and y that satisfy this system of equations are 10 and 5 respectively
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