Question

1)solve and check by substitution if your answer is correct .
Do iii, iv, v

Answer 1

$(iii) \: - x + 24 = - 3x - 20$
$- x + 3x = - 20 - 24$
$2x = - 44$
$x = \frac{ - 44}{2}$
$x = - 22$

$(iv) \: \frac{x}{2} + 5 = x$
$\frac{x}{2} - x = - 5$
$\frac{x - 2x}{2} = - 5$
$\frac{ - x}{2} = - 5$
$- x = - 5 \times 2$
$- x = - 10$
$x = 10$


$(v) \: 3x + 4 - 2x = 6x - 8 - 3$
$3x - 2x - 6x = - 8 - 3 - 4$
$3x - 8x - 15$
$- 5x = - 15$
$x = \frac{ - 15}{ - 5}$
$x = 3$

$hope \: it \: helps.....$