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A. 1 x+5=8
x=8-5
x=3

2. 8-3x=2
-3x=2-8
x=5/3

3.
[tex] \frac{3}{4} x = 3 \\ x = 3 \times \frac{4}{3} \\ x = 4[/tex]
4.
[tex]25 + 4y = 6y + 15 \\ 4y - 6y = 15 - 25 \\ - 2y = - 10 \\ y = 5[/tex]
5.
[tex] - 4x - 15 = 1 - 8x \\ -4x + 8x = 1 + 15 \\ 4x = 16 \\ x = 4[/tex]
B 1.
[tex]2x + 5 < 6 \\ 2x <1 \\ x < \frac{1}{2} [/tex]
2.
[tex]5x - 10 > 5 \\ 5x > 15 \\ x > 3[/tex]
3.
[tex]x + 5 \leqslant 2x - 4 \\ x - 2x \leqslant - 4 - 5 \\ - x \leqslant - 9 \\ x \geqslant 9[/tex]
4.
[tex]5x - 3 \geqslant 8x + 6 \\ 5x - 8x \geqslant 6 + 3 \\ - 3x \geqslant 9 \\ x \leqslant - 3[/tex]
5.
[tex]3(2y + 2) > 2(5 + 2y) \\ 6y + 6 > 10 + 4y \\ 6y - 4y > 10 - 6 \\ 2y > 4 \\ y > 2[/tex]