Question

a) 3(x-2)=
b) - 2 ( y – 4 ) = 16
c) x/2 - x
/3 = 3
d) 2/5-1/2 =3/4



Me ajudem por favor
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Answer 1

a)

$3 \times (x - 2) \\ 3x - 2 = 0 \\ 3x = 2 \\ x = \frac{2}{3}$

b)

$- 2 \times (y - 4) = 16 \\ - 2y + 8 = 16 \\ - 2y = 16 - 8 \\ - 2y = 8 \\ y = - \frac{8}{2} \\ y = - 4$

c)

$\frac{x}{2} - \frac{x}{3} = 3 \\ \frac{3x - 2x = 18}{6} \\ x = 18$

d)

$\frac{2}{5} - \frac{1}{2} = \frac{3}{4} \\ \frac{8 - 10 = 15}{20} \\ - 17$