Diketahui :7x 5=5x-9.Nilai dari 4x-7 adalah

[tex]jika \\ 7x + 5 = 5x - 9 \\ 7x - 5x = - 9 - 5 \\ 2x = - 14 \\ x = - \frac{14}{2} \\ x = 7 \\ 4x - 7 = (4x7) - 7 \\ = 28 - 7 \\ = 21 \\ jika \: \\ 7x - 5 = 5x - 9 \\ 7x - 5x = - 9 + 5 \\ 2x = - 4 \\ x = - \frac{4}{2} \\ x = 2 \\ x = 7 \\ 4x - 7 = (4x2) - 7 \\ = 8 - 7 \\ = 1[/tex]