pake cara ! 1 ) 2 + x/4 = 5 2 ) 1/2 (x-1)<2 3 ) -5y-7 > 5-2y

1)
[tex] \frac{2 + x}{4} = 5 \\ 2 + x = 5 \times 4 \\ 2 + x = 20 \\ x = \frac{20}{2} = 10[/tex]
2)
[tex] \frac{1}{2} (x - 1) < 2 \\ \frac{1}{2} x - \frac{1}{2} < 2 \\ \frac{1}{2} x < 1 \frac{1}{2} \\ x < \frac{1 \frac{1}{2} }{ \frac{1}{2} } \\ x < 1[/tex]
3)
[tex] - 5y + 2y > 5 + 7 \\ - 3y > 12 \\ y > \frac{12}{ - 3} \\ y > - 4[/tex]