5x-y=3 2x+3y=-9 Calculation by addition subtraction elimination method These two are a system of equations of second degree 6s=27-5t { 3s+4t=18 Calculation by addition subtraction elimination method

5x-y=3 2x+3y=-9 Calculation by addition subtraction elimination method These two are a system of equations of second degree 6s=27-5t { 3s+4t=18 Calculation by addition subtraction elimination method

5x-y=3
2x+3y=-9
The result is: 15x-3y = 9
2x+3y=-9
The sum of the two formulas is: 17x = 0
X = 0
Substituting x = 0 into 5x-y = 3
Y = - 3
So: x = 0
y=-3