5x=8y ise
x yerine 8 , y yerine 5 koyarsak
[tex](2 \times 8 - 3 \times 5) \div (8 - 2 \times 5) \\ = (16 - 15) \div (- 2) \\ 1 \div ( - 2) = \frac{ - 1}{2} [/tex]
