Question

Помогите с номером пять

Answer 1

$x = \frac{21}{3} = 7 \\ x = - \frac{5 \times 3}{10 \times 2} = \frac{3}{4} \\ x = - \frac{0.15}{0.5} = - 0.3 \\ p = 11 \\ 3x = - 13 \\ x = - \frac{13}{3}$

Answer 2

$1)-3x=-21 \\x=7\\\\2)-\frac{2}{5} x=\frac{3}{10} |*\frac{5}{2} \\x=-\frac{3}{4} \\x=-0.75\\\\3)0.5x+0.15=0\\0.5x=-0.15\\x=-0.3\\\\4) 0.3p-5=6-0.7p\\0.3p+0.7p=6+5\\x=11\\\\5)(6-2x)+4=-5x-3\\6-2x+4=-5x-3\\10-2x=-5x-3\\-2x+5x=-3-10\\3x=-13\\x=-\frac{13}{3}$