(9/4 ; 1/3)
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Given system of linear equations:
- 8x - 3y = 17
- 12x + 3y = 28
Solve it by elimination, add up the two equations:
- 8x + 12x + 3y - 3y = 17 + 28
- 20x = 45
- x = 9/4
Find y by substituting the value of x:
- 8*9/4 - 3y = 17
- 18 - 3y = 17
- 3y = 1
- y = 1/3
So the system has one solution: